Merge "Update aosp/master LLVM for rebase to r230699."

1 files changed, 567 insertions, 0 deletions

diff --git a/test/CodeGen/R600/mad-combine.ll b/test/CodeGen/R600/mad-combine.ll
new file mode 100644
index 0000000..8c4e09b
--- /dev/null
+++ b/test/CodeGen/R600/mad-combine.ll
@@ -0,0 +1,567 @@
+; Make sure we still form mad even when unsafe math or fp-contract is allowed instead of fma.
+
+; RUN: llc -march=amdgcn -mcpu=tahiti -verify-machineinstrs < %s | FileCheck -check-prefix=SI -check-prefix=SI-STD -check-prefix=FUNC %s
+; RUN: llc -march=amdgcn -mcpu=tahiti -verify-machineinstrs -fp-contract=fast < %s | FileCheck -check-prefix=SI -check-prefix=SI-STD -check-prefix=FUNC %s
+; RUN: llc -march=amdgcn -mcpu=tahiti -verify-machineinstrs -enable-unsafe-fp-math < %s | FileCheck -check-prefix=SI -check-prefix=SI-STD -check-prefix=FUNC %s
+
+; Make sure we don't form mad with denormals
+; RUN: llc -march=amdgcn -mcpu=tahiti -mattr=+fp32-denormals -fp-contract=fast -verify-machineinstrs < %s | FileCheck -check-prefix=SI -check-prefix=SI-DENORM -check-prefix=FUNC %s
+; RUN: llc -march=amdgcn -mcpu=verde -mattr=+fp32-denormals -fp-contract=fast -verify-machineinstrs < %s | FileCheck -check-prefix=SI -check-prefix=SI-DENORM-SLOWFMAF -check-prefix=FUNC %s
+
+declare i32 @llvm.r600.read.tidig.x() #0
+declare float @llvm.fabs.f32(float) #0
+declare float @llvm.fma.f32(float, float, float) #0
+declare float @llvm.fmuladd.f32(float, float, float) #0
+
+; (fadd (fmul x, y), z) -> (fma x, y, z)
+; FUNC-LABEL: {{^}}combine_to_mad_f32_0:
+; SI-DAG: buffer_load_dword [[A:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
+; SI-DAG: buffer_load_dword [[B:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:4{{$}}
+; SI-DAG: buffer_load_dword [[C:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:8{{$}}
+
+; SI-STD: v_mad_f32 [[RESULT:v[0-9]+]], [[A]], [[B]], [[C]]
+
+; SI-DENORM: v_fma_f32 [[RESULT:v[0-9]+]], [[A]], [[B]], [[C]]
+
+; SI-DENORM-SLOWFMAF-NOT: v_fma
+; SI-DENORM-SLOWFMAF-NOT: v_mad
+
+; SI-DENORM-SLOWFMAF: v_mul_f32_e32 [[TMP:v[0-9]+]], [[B]], [[A]]
+; SI-DENORM-SLOWFMAF: v_add_f32_e32 [[RESULT:v[0-9]+]], [[C]], [[TMP]]
+
+; SI: buffer_store_dword [[RESULT]]
+define void @combine_to_mad_f32_0(float addrspace(1)* noalias %out, float addrspace(1)* noalias %in) #1 {
+  %tid = tail call i32 @llvm.r600.read.tidig.x() #0
+  %gep.0 = getelementptr float addrspace(1)* %in, i32 %tid
+  %gep.1 = getelementptr float addrspace(1)* %gep.0, i32 1
+  %gep.2 = getelementptr float addrspace(1)* %gep.0, i32 2
+  %gep.out = getelementptr float addrspace(1)* %out, i32 %tid
+
+  %a = load float addrspace(1)* %gep.0
+  %b = load float addrspace(1)* %gep.1
+  %c = load float addrspace(1)* %gep.2
+
+  %mul = fmul float %a, %b
+  %fma = fadd float %mul, %c
+  store float %fma, float addrspace(1)* %gep.out
+  ret void
+}
+
+; (fadd (fmul x, y), z) -> (fma x, y, z)
+; FUNC-LABEL: {{^}}combine_to_mad_f32_0_2use:
+; SI-DAG: buffer_load_dword [[A:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
+; SI-DAG: buffer_load_dword [[B:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:4{{$}}
+; SI-DAG: buffer_load_dword [[C:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:8{{$}}
+; SI-DAG: buffer_load_dword [[D:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:12{{$}}
+
+; SI-STD-DAG: v_mad_f32 [[RESULT0:v[0-9]+]], [[A]], [[B]], [[C]]
+; SI-STD-DAG: v_mad_f32 [[RESULT1:v[0-9]+]], [[A]], [[B]], [[D]]
+
+; SI-DENORM-DAG: v_fma_f32 [[RESULT0:v[0-9]+]], [[A]], [[B]], [[C]]
+; SI-DENORM-DAG: v_fma_f32 [[RESULT1:v[0-9]+]], [[A]], [[B]], [[D]]
+
+; SI-DENORM-SLOWFMAF: v_mul_f32_e32 [[TMP:v[0-9]+]], [[B]], [[A]]
+; SI-DENORM-SLOWFMAF-DAG: v_add_f32_e32 [[RESULT0:v[0-9]+]], [[C]], [[TMP]]
+; SI-DENORM-SLOWFMAF-DAG: v_add_f32_e32 [[RESULT1:v[0-9]+]], [[D]], [[TMP]]
+
+; SI-DAG: buffer_store_dword [[RESULT0]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
+; SI-DAG: buffer_store_dword [[RESULT1]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:4{{$}}
+; SI: s_endpgm
+define void @combine_to_mad_f32_0_2use(float addrspace(1)* noalias %out, float addrspace(1)* noalias %in) #1 {
+  %tid = tail call i32 @llvm.r600.read.tidig.x() #0
+  %gep.0 = getelementptr float addrspace(1)* %in, i32 %tid
+  %gep.1 = getelementptr float addrspace(1)* %gep.0, i32 1
+  %gep.2 = getelementptr float addrspace(1)* %gep.0, i32 2
+  %gep.3 = getelementptr float addrspace(1)* %gep.0, i32 3
+  %gep.out.0 = getelementptr float addrspace(1)* %out, i32 %tid
+  %gep.out.1 = getelementptr float addrspace(1)* %gep.out.0, i32 1
+
+  %a = load float addrspace(1)* %gep.0
+  %b = load float addrspace(1)* %gep.1
+  %c = load float addrspace(1)* %gep.2
+  %d = load float addrspace(1)* %gep.3
+
+  %mul = fmul float %a, %b
+  %fma0 = fadd float %mul, %c
+  %fma1 = fadd float %mul, %d
+
+  store float %fma0, float addrspace(1)* %gep.out.0
+  store float %fma1, float addrspace(1)* %gep.out.1
+  ret void
+}
+
+; (fadd x, (fmul y, z)) -> (fma y, z, x)
+; FUNC-LABEL: {{^}}combine_to_mad_f32_1:
+; SI-DAG: buffer_load_dword [[A:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
+; SI-DAG: buffer_load_dword [[B:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:4{{$}}
+; SI-DAG: buffer_load_dword [[C:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:8{{$}}
+
+; SI-STD: v_mad_f32 [[RESULT:v[0-9]+]], [[A]], [[B]], [[C]]
+; SI-DENORM: v_fma_f32 [[RESULT:v[0-9]+]], [[A]], [[B]], [[C]]
+
+; SI-DENORM-SLOWFMAF: v_mul_f32_e32 [[TMP:v[0-9]+]], [[B]], [[A]]
+; SI-DENORM-SLOWFMAF: v_add_f32_e32 [[RESULT:v[0-9]+]], [[TMP]], [[C]]
+
+; SI: buffer_store_dword [[RESULT]]
+define void @combine_to_mad_f32_1(float addrspace(1)* noalias %out, float addrspace(1)* noalias %in) #1 {
+  %tid = tail call i32 @llvm.r600.read.tidig.x() #0
+  %gep.0 = getelementptr float addrspace(1)* %in, i32 %tid
+  %gep.1 = getelementptr float addrspace(1)* %gep.0, i32 1
+  %gep.2 = getelementptr float addrspace(1)* %gep.0, i32 2
+  %gep.out = getelementptr float addrspace(1)* %out, i32 %tid
+
+  %a = load float addrspace(1)* %gep.0
+  %b = load float addrspace(1)* %gep.1
+  %c = load float addrspace(1)* %gep.2
+
+  %mul = fmul float %a, %b
+  %fma = fadd float %c, %mul
+  store float %fma, float addrspace(1)* %gep.out
+  ret void
+}
+
+; (fsub (fmul x, y), z) -> (fma x, y, (fneg z))
+; FUNC-LABEL: {{^}}combine_to_mad_fsub_0_f32:
+; SI-DAG: buffer_load_dword [[A:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
+; SI-DAG: buffer_load_dword [[B:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:4{{$}}
+; SI-DAG: buffer_load_dword [[C:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:8{{$}}
+
+; SI-STD: v_mad_f32 [[RESULT:v[0-9]+]], [[A]], [[B]], -[[C]]
+; SI-DENORM: v_fma_f32 [[RESULT:v[0-9]+]], [[A]], [[B]], -[[C]]
+
+; SI-DENORM-SLOWFMAF: v_mul_f32_e32 [[TMP:v[0-9]+]], [[B]], [[A]]
+; SI-DENORM-SLOWFMAF: v_subrev_f32_e32 [[RESULT:v[0-9]+]], [[C]], [[TMP]]
+
+; SI: buffer_store_dword [[RESULT]]
+define void @combine_to_mad_fsub_0_f32(float addrspace(1)* noalias %out, float addrspace(1)* noalias %in) #1 {
+  %tid = tail call i32 @llvm.r600.read.tidig.x() #0
+  %gep.0 = getelementptr float addrspace(1)* %in, i32 %tid
+  %gep.1 = getelementptr float addrspace(1)* %gep.0, i32 1
+  %gep.2 = getelementptr float addrspace(1)* %gep.0, i32 2
+  %gep.out = getelementptr float addrspace(1)* %out, i32 %tid
+
+  %a = load float addrspace(1)* %gep.0
+  %b = load float addrspace(1)* %gep.1
+  %c = load float addrspace(1)* %gep.2
+
+  %mul = fmul float %a, %b
+  %fma = fsub float %mul, %c
+  store float %fma, float addrspace(1)* %gep.out
+  ret void
+}
+
+; (fsub (fmul x, y), z) -> (fma x, y, (fneg z))
+; FUNC-LABEL: {{^}}combine_to_mad_fsub_0_f32_2use:
+; SI-DAG: buffer_load_dword [[A:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
+; SI-DAG: buffer_load_dword [[B:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:4{{$}}
+; SI-DAG: buffer_load_dword [[C:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:8{{$}}
+; SI-DAG: buffer_load_dword [[D:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:12{{$}}
+
+; SI-STD-DAG: v_mad_f32 [[RESULT0:v[0-9]+]], [[A]], [[B]], -[[C]]
+; SI-STD-DAG: v_mad_f32 [[RESULT1:v[0-9]+]], [[A]], [[B]], -[[D]]
+
+; SI-DENORM-DAG: v_fma_f32 [[RESULT0:v[0-9]+]], [[A]], [[B]], -[[C]]
+; SI-DENORM-DAG: v_fma_f32 [[RESULT1:v[0-9]+]], [[A]], [[B]], -[[D]]
+
+; SI-DENORM-SLOWFMAF: v_mul_f32_e32 [[TMP:v[0-9]+]], [[B]], [[A]]
+; SI-DENORM-SLOWFMAF-DAG: v_subrev_f32_e32 [[RESULT0:v[0-9]+]], [[C]], [[TMP]]
+; SI-DENORM-SLOWFMAF-DAG: v_subrev_f32_e32 [[RESULT1:v[0-9]+]], [[D]], [[TMP]]
+
+; SI-DAG: buffer_store_dword [[RESULT0]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
+; SI-DAG: buffer_store_dword [[RESULT1]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:4{{$}}
+; SI: s_endpgm
+define void @combine_to_mad_fsub_0_f32_2use(float addrspace(1)* noalias %out, float addrspace(1)* noalias %in) #1 {
+  %tid = tail call i32 @llvm.r600.read.tidig.x() #0
+  %gep.0 = getelementptr float addrspace(1)* %in, i32 %tid
+  %gep.1 = getelementptr float addrspace(1)* %gep.0, i32 1
+  %gep.2 = getelementptr float addrspace(1)* %gep.0, i32 2
+  %gep.3 = getelementptr float addrspace(1)* %gep.0, i32 3
+  %gep.out.0 = getelementptr float addrspace(1)* %out, i32 %tid
+  %gep.out.1 = getelementptr float addrspace(1)* %gep.out.0, i32 1
+
+  %a = load float addrspace(1)* %gep.0
+  %b = load float addrspace(1)* %gep.1
+  %c = load float addrspace(1)* %gep.2
+  %d = load float addrspace(1)* %gep.3
+
+  %mul = fmul float %a, %b
+  %fma0 = fsub float %mul, %c
+  %fma1 = fsub float %mul, %d
+  store float %fma0, float addrspace(1)* %gep.out.0
+  store float %fma1, float addrspace(1)* %gep.out.1
+  ret void
+}
+
+; (fsub x, (fmul y, z)) -> (fma (fneg y), z, x)
+; FUNC-LABEL: {{^}}combine_to_mad_fsub_1_f32:
+; SI-DAG: buffer_load_dword [[A:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
+; SI-DAG: buffer_load_dword [[B:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:4{{$}}
+; SI-DAG: buffer_load_dword [[C:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:8{{$}}
+
+; SI-STD: v_mad_f32 [[RESULT:v[0-9]+]], -[[A]], [[B]], [[C]]
+; SI-DENORM: v_fma_f32 [[RESULT:v[0-9]+]], -[[A]], [[B]], [[C]]
+
+; SI-DENORM-SLOWFMAF: v_mul_f32_e32 [[TMP:v[0-9]+]], [[B]], [[A]]
+; SI-DENORM-SLOWFMAF: v_subrev_f32_e32 [[RESULT:v[0-9]+]], [[TMP]], [[C]]
+
+; SI: buffer_store_dword [[RESULT]]
+define void @combine_to_mad_fsub_1_f32(float addrspace(1)* noalias %out, float addrspace(1)* noalias %in) #1 {
+  %tid = tail call i32 @llvm.r600.read.tidig.x() #0
+  %gep.0 = getelementptr float addrspace(1)* %in, i32 %tid
+  %gep.1 = getelementptr float addrspace(1)* %gep.0, i32 1
+  %gep.2 = getelementptr float addrspace(1)* %gep.0, i32 2
+  %gep.out = getelementptr float addrspace(1)* %out, i32 %tid
+
+  %a = load float addrspace(1)* %gep.0
+  %b = load float addrspace(1)* %gep.1
+  %c = load float addrspace(1)* %gep.2
+
+  %mul = fmul float %a, %b
+  %fma = fsub float %c, %mul
+  store float %fma, float addrspace(1)* %gep.out
+  ret void
+}
+
+; (fsub x, (fmul y, z)) -> (fma (fneg y), z, x)
+; FUNC-LABEL: {{^}}combine_to_mad_fsub_1_f32_2use:
+; SI-DAG: buffer_load_dword [[A:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
+; SI-DAG: buffer_load_dword [[B:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:4{{$}}
+; SI-DAG: buffer_load_dword [[C:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:8{{$}}
+
+; SI-STD-DAG: v_mad_f32 [[RESULT0:v[0-9]+]], -[[A]], [[B]], [[C]]
+; SI-STD-DAG: v_mad_f32 [[RESULT1:v[0-9]+]], -[[A]], [[B]], [[D]]
+
+; SI-DENORM-DAG: v_fma_f32 [[RESULT0:v[0-9]+]], -[[A]], [[B]], [[C]]
+; SI-DENORM-DAG: v_fma_f32 [[RESULT1:v[0-9]+]], -[[A]], [[B]], [[D]]
+
+; SI-DENORM-SLOWFMAF: v_mul_f32_e32 [[TMP:v[0-9]+]], [[B]], [[A]]
+; SI-DENORM-SLOWFMAF-DAG: v_subrev_f32_e32 [[RESULT0:v[0-9]+]], [[TMP]], [[C]]
+; SI-DENORM-SLOWFMAF-DAG: v_subrev_f32_e32 [[RESULT1:v[0-9]+]], [[TMP]], [[D]]
+
+; SI-DAG: buffer_store_dword [[RESULT0]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
+; SI-DAG: buffer_store_dword [[RESULT1]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:4{{$}}
+; SI: s_endpgm
+define void @combine_to_mad_fsub_1_f32_2use(float addrspace(1)* noalias %out, float addrspace(1)* noalias %in) #1 {
+  %tid = tail call i32 @llvm.r600.read.tidig.x() #0
+  %gep.0 = getelementptr float addrspace(1)* %in, i32 %tid
+  %gep.1 = getelementptr float addrspace(1)* %gep.0, i32 1
+  %gep.2 = getelementptr float addrspace(1)* %gep.0, i32 2
+  %gep.3 = getelementptr float addrspace(1)* %gep.0, i32 3
+  %gep.out.0 = getelementptr float addrspace(1)* %out, i32 %tid
+  %gep.out.1 = getelementptr float addrspace(1)* %gep.out.0, i32 1
+
+  %a = load float addrspace(1)* %gep.0
+  %b = load float addrspace(1)* %gep.1
+  %c = load float addrspace(1)* %gep.2
+  %d = load float addrspace(1)* %gep.3
+
+  %mul = fmul float %a, %b
+  %fma0 = fsub float %c, %mul
+  %fma1 = fsub float %d, %mul
+  store float %fma0, float addrspace(1)* %gep.out.0
+  store float %fma1, float addrspace(1)* %gep.out.1
+  ret void
+}
+
+; (fsub (fneg (fmul x, y)), z) -> (fma (fneg x), y, (fneg z))
+; FUNC-LABEL: {{^}}combine_to_mad_fsub_2_f32:
+; SI-DAG: buffer_load_dword [[A:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
+; SI-DAG: buffer_load_dword [[B:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:4{{$}}
+; SI-DAG: buffer_load_dword [[C:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:8{{$}}
+
+; SI-STD: v_mad_f32 [[RESULT:v[0-9]+]], -[[A]], [[B]], -[[C]]
+
+; SI-DENORM: v_fma_f32 [[RESULT:v[0-9]+]], -[[A]], [[B]], -[[C]]
+
+; SI-DENORM-SLOWFMAF: v_mul_f32_e32 [[TMP:v[0-9]+]], [[B]], [[A]]
+; SI-DENORM-SLOWFMAF: v_sub_f32_e64 [[RESULT:v[0-9]+]], -[[TMP]], [[C]]
+
+; SI: buffer_store_dword [[RESULT]]
+define void @combine_to_mad_fsub_2_f32(float addrspace(1)* noalias %out, float addrspace(1)* noalias %in) #1 {
+  %tid = tail call i32 @llvm.r600.read.tidig.x() #0
+  %gep.0 = getelementptr float addrspace(1)* %in, i32 %tid
+  %gep.1 = getelementptr float addrspace(1)* %gep.0, i32 1
+  %gep.2 = getelementptr float addrspace(1)* %gep.0, i32 2
+  %gep.out = getelementptr float addrspace(1)* %out, i32 %tid
+
+  %a = load float addrspace(1)* %gep.0
+  %b = load float addrspace(1)* %gep.1
+  %c = load float addrspace(1)* %gep.2
+
+  %mul = fmul float %a, %b
+  %mul.neg = fsub float -0.0, %mul
+  %fma = fsub float %mul.neg, %c
+
+  store float %fma, float addrspace(1)* %gep.out
+  ret void
+}
+
+; (fsub (fneg (fmul x, y)), z) -> (fma (fneg x), y, (fneg z))
+; FUNC-LABEL: {{^}}combine_to_mad_fsub_2_f32_2uses_neg:
+; SI-DAG: buffer_load_dword [[A:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
+; SI-DAG: buffer_load_dword [[B:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:4{{$}}
+; SI-DAG: buffer_load_dword [[C:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:8{{$}}
+
+; SI-STD-DAG: v_mad_f32 [[RESULT0:v[0-9]+]], -[[A]], [[B]], -[[C]]
+; SI-STD-DAG: v_mad_f32 [[RESULT1:v[0-9]+]], -[[A]], [[B]], -[[D]]
+
+; SI-DENORM-DAG: v_fma_f32 [[RESULT0:v[0-9]+]], -[[A]], [[B]], -[[C]]
+; SI-DENORM-DAG: v_fma_f32 [[RESULT1:v[0-9]+]], -[[A]], [[B]], -[[D]]
+
+; SI-DENORM-SLOWFMAF: v_mul_f32_e32 [[TMP:v[0-9]+]], [[B]], [[A]]
+; SI-DENORM-SLOWFMAF-DAG: v_sub_f32_e64 [[RESULT0:v[0-9]+]], -[[TMP]], [[C]]
+; SI-DENORM-SLOWFMAF-DAG: v_sub_f32_e64 [[RESULT1:v[0-9]+]], -[[TMP]], [[D]]
+
+; SI-DAG: buffer_store_dword [[RESULT0]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
+; SI-DAG: buffer_store_dword [[RESULT1]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:4{{$}}
+; SI: s_endpgm
+define void @combine_to_mad_fsub_2_f32_2uses_neg(float addrspace(1)* noalias %out, float addrspace(1)* noalias %in) #1 {
+  %tid = tail call i32 @llvm.r600.read.tidig.x() #0
+  %gep.0 = getelementptr float addrspace(1)* %in, i32 %tid
+  %gep.1 = getelementptr float addrspace(1)* %gep.0, i32 1
+  %gep.2 = getelementptr float addrspace(1)* %gep.0, i32 2
+  %gep.3 = getelementptr float addrspace(1)* %gep.0, i32 3
+  %gep.out.0 = getelementptr float addrspace(1)* %out, i32 %tid
+  %gep.out.1 = getelementptr float addrspace(1)* %gep.out.0, i32 1
+
+  %a = load float addrspace(1)* %gep.0
+  %b = load float addrspace(1)* %gep.1
+  %c = load float addrspace(1)* %gep.2
+  %d = load float addrspace(1)* %gep.3
+
+  %mul = fmul float %a, %b
+  %mul.neg = fsub float -0.0, %mul
+  %fma0 = fsub float %mul.neg, %c
+  %fma1 = fsub float %mul.neg, %d
+
+  store float %fma0, float addrspace(1)* %gep.out.0
+  store float %fma1, float addrspace(1)* %gep.out.1
+  ret void
+}
+
+; (fsub (fneg (fmul x, y)), z) -> (fma (fneg x), y, (fneg z))
+; FUNC-LABEL: {{^}}combine_to_mad_fsub_2_f32_2uses_mul:
+; SI-DAG: buffer_load_dword [[A:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
+; SI-DAG: buffer_load_dword [[B:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:4{{$}}
+; SI-DAG: buffer_load_dword [[C:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:8{{$}}
+
+; SI-STD-DAG: v_mad_f32 [[RESULT0:v[0-9]+]], -[[A]], [[B]], -[[C]]
+; SI-STD-DAG: v_mad_f32 [[RESULT1:v[0-9]+]], [[A]], [[B]], -[[D]]
+
+; SI-DENORM-DAG: v_fma_f32 [[RESULT0:v[0-9]+]], -[[A]], [[B]], -[[C]]
+; SI-DENORM-DAG: v_fma_f32 [[RESULT1:v[0-9]+]], [[A]], [[B]], -[[D]]
+
+; SI-DENORM-SLOWFMAF: v_mul_f32_e32 [[TMP:v[0-9]+]], [[B]], [[A]]
+; SI-DENORM-SLOWFMAF-DAG: v_sub_f32_e64 [[RESULT0:v[0-9]+]], -[[TMP]], [[C]]
+; SI-DENORM-SLOWFMAF-DAG: v_subrev_f32_e32 [[RESULT1:v[0-9]+]], [[D]], [[TMP]]
+
+; SI-DAG: buffer_store_dword [[RESULT0]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
+; SI-DAG: buffer_store_dword [[RESULT1]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:4{{$}}
+; SI: s_endpgm
+define void @combine_to_mad_fsub_2_f32_2uses_mul(float addrspace(1)* noalias %out, float addrspace(1)* noalias %in) #1 {
+  %tid = tail call i32 @llvm.r600.read.tidig.x() #0
+  %gep.0 = getelementptr float addrspace(1)* %in, i32 %tid
+  %gep.1 = getelementptr float addrspace(1)* %gep.0, i32 1
+  %gep.2 = getelementptr float addrspace(1)* %gep.0, i32 2
+  %gep.3 = getelementptr float addrspace(1)* %gep.0, i32 3
+  %gep.out.0 = getelementptr float addrspace(1)* %out, i32 %tid
+  %gep.out.1 = getelementptr float addrspace(1)* %gep.out.0, i32 1
+
+  %a = load float addrspace(1)* %gep.0
+  %b = load float addrspace(1)* %gep.1
+  %c = load float addrspace(1)* %gep.2
+  %d = load float addrspace(1)* %gep.3
+
+  %mul = fmul float %a, %b
+  %mul.neg = fsub float -0.0, %mul
+  %fma0 = fsub float %mul.neg, %c
+  %fma1 = fsub float %mul, %d
+
+  store float %fma0, float addrspace(1)* %gep.out.0
+  store float %fma1, float addrspace(1)* %gep.out.1
+  ret void
+}
+
+; fold (fsub (fma x, y, (fmul u, v)), z) -> (fma x, y (fma u, v, (fneg z)))
+
+; FUNC-LABEL: {{^}}aggressive_combine_to_mad_fsub_0_f32:
+; SI-DAG: buffer_load_dword [[A:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
+; SI-DAG: buffer_load_dword [[B:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:4{{$}}
+; SI-DAG: buffer_load_dword [[C:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:8{{$}}
+; SI-DAG: buffer_load_dword [[D:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:12{{$}}
+; SI-DAG: buffer_load_dword [[E:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:16{{$}}
+
+; SI-STD: v_mul_f32_e32 [[TMP0:v[0-9]+]], [[E]], [[D]]
+; SI-STD: v_fma_f32 [[TMP1:v[0-9]+]], [[A]], [[B]], [[TMP0]]
+; SI-STD: v_subrev_f32_e32 [[RESULT:v[0-9]+]], [[C]], [[TMP1]]
+
+; SI-DENORM: v_fma_f32 [[TMP0:v[0-9]+]], [[D]], [[E]], -[[C]]
+; SI-DENORM: v_fma_f32 [[RESULT:v[0-9]+]], [[A]], [[B]], [[TMP0]]
+
+; SI-DENORM-SLOWFMAF: v_mul_f32_e32 [[TMP0:v[0-9]+]], [[E]], [[D]]
+; SI-DENORM-SLOWFMAF: v_fma_f32 [[TMP1:v[0-9]+]], [[A]], [[B]], [[TMP0]]
+; SI-DENORM-SLOWFMAF: v_subrev_f32_e32 [[RESULT1:v[0-9]+]], [[C]], [[TMP1]]
+
+; SI: buffer_store_dword [[RESULT]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
+define void @aggressive_combine_to_mad_fsub_0_f32(float addrspace(1)* noalias %out, float addrspace(1)* noalias %in) #1 {
+  %tid = tail call i32 @llvm.r600.read.tidig.x() #0
+  %gep.0 = getelementptr float addrspace(1)* %in, i32 %tid
+  %gep.1 = getelementptr float addrspace(1)* %gep.0, i32 1
+  %gep.2 = getelementptr float addrspace(1)* %gep.0, i32 2
+  %gep.3 = getelementptr float addrspace(1)* %gep.0, i32 3
+  %gep.4 = getelementptr float addrspace(1)* %gep.0, i32 4
+  %gep.out = getelementptr float addrspace(1)* %out, i32 %tid
+
+  %x = load float addrspace(1)* %gep.0
+  %y = load float addrspace(1)* %gep.1
+  %z = load float addrspace(1)* %gep.2
+  %u = load float addrspace(1)* %gep.3
+  %v = load float addrspace(1)* %gep.4
+
+  %tmp0 = fmul float %u, %v
+  %tmp1 = call float @llvm.fma.f32(float %x, float %y, float %tmp0) #0
+  %tmp2 = fsub float %tmp1, %z
+
+  store float %tmp2, float addrspace(1)* %gep.out
+  ret void
+}
+
+; fold (fsub x, (fma y, z, (fmul u, v)))
+;   -> (fma (fneg y), z, (fma (fneg u), v, x))
+
+; FUNC-LABEL: {{^}}aggressive_combine_to_mad_fsub_1_f32:
+; SI-DAG: buffer_load_dword [[A:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
+; SI-DAG: buffer_load_dword [[B:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:4{{$}}
+; SI-DAG: buffer_load_dword [[C:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:8{{$}}
+; SI-DAG: buffer_load_dword [[D:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:12{{$}}
+; SI-DAG: buffer_load_dword [[E:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:16{{$}}
+
+; SI-STD: v_mul_f32_e32 [[TMP0:v[0-9]+]], [[E]], [[D]]
+; SI-STD: v_fma_f32 [[TMP1:v[0-9]+]], [[B]], [[C]], [[TMP0]]
+; SI-STD: v_subrev_f32_e32 [[RESULT:v[0-9]+]], [[TMP1]], [[A]]
+
+; SI-DENORM: v_fma_f32 [[TMP0:v[0-9]+]], -[[D]], [[E]], [[A]]
+; SI-DENORM: v_fma_f32 [[RESULT:v[0-9]+]], -[[B]], [[C]], [[TMP0]]
+
+; SI-DENORM-SLOWFMAF: v_mul_f32_e32 [[TMP0:v[0-9]+]], [[E]], [[D]]
+; SI-DENORM-SLOWFMAF: v_fma_f32 [[TMP1:v[0-9]+]], [[B]], [[C]], [[TMP0]]
+; SI-DENORM-SLOWFMAF: v_subrev_f32_e32 [[RESULT:v[0-9]+]], [[TMP1]], [[A]]
+
+; SI: buffer_store_dword [[RESULT]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
+; SI: s_endpgm
+define void @aggressive_combine_to_mad_fsub_1_f32(float addrspace(1)* noalias %out, float addrspace(1)* noalias %in) #1 {
+  %tid = tail call i32 @llvm.r600.read.tidig.x() #0
+  %gep.0 = getelementptr float addrspace(1)* %in, i32 %tid
+  %gep.1 = getelementptr float addrspace(1)* %gep.0, i32 1
+  %gep.2 = getelementptr float addrspace(1)* %gep.0, i32 2
+  %gep.3 = getelementptr float addrspace(1)* %gep.0, i32 3
+  %gep.4 = getelementptr float addrspace(1)* %gep.0, i32 4
+  %gep.out = getelementptr float addrspace(1)* %out, i32 %tid
+
+  %x = load float addrspace(1)* %gep.0
+  %y = load float addrspace(1)* %gep.1
+  %z = load float addrspace(1)* %gep.2
+  %u = load float addrspace(1)* %gep.3
+  %v = load float addrspace(1)* %gep.4
+
+  %tmp0 = fmul float %u, %v
+  %tmp1 = call float @llvm.fma.f32(float %y, float %z, float %tmp0) #0
+  %tmp2 = fsub float %x, %tmp1
+
+  store float %tmp2, float addrspace(1)* %gep.out
+  ret void
+}
+
+; fold (fsub (fma x, y, (fmul u, v)), z) -> (fma x, y (fma u, v, (fneg z)))
+
+; FUNC-LABEL: {{^}}aggressive_combine_to_mad_fsub_2_f32:
+; SI-DAG: buffer_load_dword [[A:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
+; SI-DAG: buffer_load_dword [[B:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:4{{$}}
+; SI-DAG: buffer_load_dword [[C:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:8{{$}}
+; SI-DAG: buffer_load_dword [[D:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:12{{$}}
+; SI-DAG: buffer_load_dword [[E:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:16{{$}}
+
+; SI-STD: v_mad_f32 [[TMP:v[0-9]+]], [[D]], [[E]], -[[C]]
+; SI-STD: v_mad_f32 [[RESULT:v[0-9]+]], [[A]], [[B]], [[TMP]]
+
+; SI-DENORM: v_fma_f32 [[TMP:v[0-9]+]], [[D]], [[E]], -[[C]]
+; SI-DENORM: v_fma_f32 [[RESULT:v[0-9]+]], [[A]], [[B]], [[TMP]]
+
+; SI-DENORM-SLOWFMAF: v_mul_f32_e32 [[TMP0:v[0-9]+]], [[E]], [[D]]
+; SI-DENORM-SLOWFMAF: v_mul_f32_e32 [[TMP1:v[0-9]+]], [[B]], [[A]]
+; SI-DENORM-SLOWFMAF: v_add_f32_e32 [[TMP2:v[0-9]+]], [[TMP0]], [[TMP1]]
+; SI-DENORM-SLOWFMAF: v_subrev_f32_e32 [[RESULT:v[0-9]+]], [[C]], [[TMP2]]
+
+; SI: buffer_store_dword [[RESULT]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
+; SI: s_endpgm
+define void @aggressive_combine_to_mad_fsub_2_f32(float addrspace(1)* noalias %out, float addrspace(1)* noalias %in) #1 {
+  %tid = tail call i32 @llvm.r600.read.tidig.x() #0
+  %gep.0 = getelementptr float addrspace(1)* %in, i32 %tid
+  %gep.1 = getelementptr float addrspace(1)* %gep.0, i32 1
+  %gep.2 = getelementptr float addrspace(1)* %gep.0, i32 2
+  %gep.3 = getelementptr float addrspace(1)* %gep.0, i32 3
+  %gep.4 = getelementptr float addrspace(1)* %gep.0, i32 4
+  %gep.out = getelementptr float addrspace(1)* %out, i32 %tid
+
+  %x = load float addrspace(1)* %gep.0
+  %y = load float addrspace(1)* %gep.1
+  %z = load float addrspace(1)* %gep.2
+  %u = load float addrspace(1)* %gep.3
+  %v = load float addrspace(1)* %gep.4
+
+  %tmp0 = fmul float %u, %v
+  %tmp1 = call float @llvm.fmuladd.f32(float %x, float %y, float %tmp0) #0
+  %tmp2 = fsub float %tmp1, %z
+
+  store float %tmp2, float addrspace(1)* %gep.out
+  ret void
+}
+
+; fold (fsub x, (fmuladd y, z, (fmul u, v)))
+;   -> (fmuladd (fneg y), z, (fmuladd (fneg u), v, x))
+
+; FUNC-LABEL: {{^}}aggressive_combine_to_mad_fsub_3_f32:
+; SI-DAG: buffer_load_dword [[A:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
+; SI-DAG: buffer_load_dword [[B:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:4{{$}}
+; SI-DAG: buffer_load_dword [[C:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:8{{$}}
+; SI-DAG: buffer_load_dword [[D:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:12{{$}}
+; SI-DAG: buffer_load_dword [[E:v[0-9]+]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64 offset:16{{$}}
+
+; SI-STD: v_mad_f32 [[TMP:v[0-9]+]], -[[D]], [[E]], [[A]]
+; SI-STD: v_mad_f32 [[RESULT:v[0-9]+]], -[[B]], [[C]], [[TMP]]
+
+; SI-DENORM: v_fma_f32 [[TMP:v[0-9]+]], -[[D]], [[E]], [[A]]
+; SI-DENORM: v_fma_f32 [[RESULT:v[0-9]+]], -[[B]], [[C]], [[TMP]]
+
+; SI-DENORM-SLOWFMAF: v_mul_f32_e32 [[TMP0:v[0-9]+]], [[E]], [[D]]
+; SI-DENORM-SLOWFMAF: v_mul_f32_e32 [[TMP1:v[0-9]+]], [[C]], [[B]]
+; SI-DENORM-SLOWFMAF: v_add_f32_e32 [[TMP2:v[0-9]+]], [[TMP0]], [[TMP1]]
+; SI-DENORM-SLOWFMAF: v_subrev_f32_e32 [[RESULT:v[0-9]+]], [[TMP2]], [[A]]
+
+; SI: buffer_store_dword [[RESULT]], v{{\[[0-9]+:[0-9]+\]}}, s{{\[[0-9]+:[0-9]+\]}}, 0 addr64{{$}}
+; SI: s_endpgm
+define void @aggressive_combine_to_mad_fsub_3_f32(float addrspace(1)* noalias %out, float addrspace(1)* noalias %in) #1 {
+  %tid = tail call i32 @llvm.r600.read.tidig.x() #0
+  %gep.0 = getelementptr float addrspace(1)* %in, i32 %tid
+  %gep.1 = getelementptr float addrspace(1)* %gep.0, i32 1
+  %gep.2 = getelementptr float addrspace(1)* %gep.0, i32 2
+  %gep.3 = getelementptr float addrspace(1)* %gep.0, i32 3
+  %gep.4 = getelementptr float addrspace(1)* %gep.0, i32 4
+  %gep.out = getelementptr float addrspace(1)* %out, i32 %tid
+
+  %x = load float addrspace(1)* %gep.0
+  %y = load float addrspace(1)* %gep.1
+  %z = load float addrspace(1)* %gep.2
+  %u = load float addrspace(1)* %gep.3
+  %v = load float addrspace(1)* %gep.4
+
+  %tmp0 = fmul float %u, %v
+  %tmp1 = call float @llvm.fmuladd.f32(float %y, float %z, float %tmp0) #0
+  %tmp2 = fsub float %x, %tmp1
+
+  store float %tmp2, float addrspace(1)* %gep.out
+  ret void
+}
+
+attributes #0 = { nounwind readnone }
+attributes #1 = { nounwind }