aboutsummaryrefslogtreecommitdiffstats
path: root/test/CodeGen/X86/cmovcmov.ll
diff options
context:
space:
mode:
Diffstat (limited to 'test/CodeGen/X86/cmovcmov.ll')
-rw-r--r--test/CodeGen/X86/cmovcmov.ll226
1 files changed, 226 insertions, 0 deletions
diff --git a/test/CodeGen/X86/cmovcmov.ll b/test/CodeGen/X86/cmovcmov.ll
new file mode 100644
index 0000000..982bc82
--- /dev/null
+++ b/test/CodeGen/X86/cmovcmov.ll
@@ -0,0 +1,226 @@
+; RUN: llc < %s -asm-verbose=false -mtriple=x86_64-unknown-linux | FileCheck %s --check-prefix=CHECK --check-prefix=CMOV
+; RUN: llc < %s -asm-verbose=false -mtriple=i686-unknown-linux | FileCheck %s --check-prefix=CHECK --check-prefix=NOCMOV
+
+target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
+
+; Test 2xCMOV patterns exposed after legalization.
+; One way to do that is with (select (fcmp une/oeq)), which gets
+; legalized to setp/setne.
+
+; CHECK-LABEL: test_select_fcmp_oeq_i32:
+
+; CMOV-NEXT: ucomiss %xmm1, %xmm0
+; CMOV-NEXT: cmovnel %esi, %edi
+; CMOV-NEXT: cmovpl %esi, %edi
+; CMOV-NEXT: movl %edi, %eax
+; CMOV-NEXT: retq
+
+; NOCMOV-NEXT: flds 8(%esp)
+; NOCMOV-NEXT: flds 4(%esp)
+; NOCMOV-NEXT: fucompp
+; NOCMOV-NEXT: fnstsw %ax
+; NOCMOV-NEXT: sahf
+; NOCMOV-NEXT: leal 16(%esp), %eax
+; NOCMOV-NEXT: jne [[TBB:.LBB[0-9_]+]]
+; NOCMOV-NEXT: jp [[TBB]]
+; NOCMOV-NEXT: leal 12(%esp), %eax
+; NOCMOV-NEXT:[[TBB]]:
+; NOCMOV-NEXT: movl (%eax), %eax
+; NOCMOV-NEXT: retl
+define i32 @test_select_fcmp_oeq_i32(float %a, float %b, i32 %c, i32 %d) #0 {
+entry:
+ %cmp = fcmp oeq float %a, %b
+ %r = select i1 %cmp, i32 %c, i32 %d
+ ret i32 %r
+}
+
+; CHECK-LABEL: test_select_fcmp_oeq_i64:
+
+; CMOV-NEXT: ucomiss %xmm1, %xmm0
+; CMOV-NEXT: cmovneq %rsi, %rdi
+; CMOV-NEXT: cmovpq %rsi, %rdi
+; CMOV-NEXT: movq %rdi, %rax
+; CMOV-NEXT: retq
+
+; NOCMOV-NEXT: flds 8(%esp)
+; NOCMOV-NEXT: flds 4(%esp)
+; NOCMOV-NEXT: fucompp
+; NOCMOV-NEXT: fnstsw %ax
+; NOCMOV-NEXT: sahf
+; NOCMOV-NEXT: leal 20(%esp), %ecx
+; NOCMOV-NEXT: jne [[TBB:.LBB[0-9_]+]]
+; NOCMOV-NEXT: jp [[TBB]]
+; NOCMOV-NEXT: leal 12(%esp), %ecx
+; NOCMOV-NEXT: [[TBB]]:
+; NOCMOV-NEXT: movl (%ecx), %eax
+; NOCMOV-NEXT: orl $4, %ecx
+; NOCMOV-NEXT: movl (%ecx), %edx
+; NOCMOV-NEXT: retl
+define i64 @test_select_fcmp_oeq_i64(float %a, float %b, i64 %c, i64 %d) #0 {
+entry:
+ %cmp = fcmp oeq float %a, %b
+ %r = select i1 %cmp, i64 %c, i64 %d
+ ret i64 %r
+}
+
+; CHECK-LABEL: test_select_fcmp_une_i64:
+
+; CMOV-NEXT: ucomiss %xmm1, %xmm0
+; CMOV-NEXT: cmovneq %rdi, %rsi
+; CMOV-NEXT: cmovpq %rdi, %rsi
+; CMOV-NEXT: movq %rsi, %rax
+; CMOV-NEXT: retq
+
+; NOCMOV-NEXT: flds 8(%esp)
+; NOCMOV-NEXT: flds 4(%esp)
+; NOCMOV-NEXT: fucompp
+; NOCMOV-NEXT: fnstsw %ax
+; NOCMOV-NEXT: sahf
+; NOCMOV-NEXT: leal 12(%esp), %ecx
+; NOCMOV-NEXT: jne [[TBB:.LBB[0-9_]+]]
+; NOCMOV-NEXT: jp [[TBB]]
+; NOCMOV-NEXT: leal 20(%esp), %ecx
+; NOCMOV-NEXT: [[TBB]]:
+; NOCMOV-NEXT: movl (%ecx), %eax
+; NOCMOV-NEXT: orl $4, %ecx
+; NOCMOV-NEXT: movl (%ecx), %edx
+; NOCMOV-NEXT: retl
+define i64 @test_select_fcmp_une_i64(float %a, float %b, i64 %c, i64 %d) #0 {
+entry:
+ %cmp = fcmp une float %a, %b
+ %r = select i1 %cmp, i64 %c, i64 %d
+ ret i64 %r
+}
+
+; CHECK-LABEL: test_select_fcmp_oeq_f64:
+
+; CMOV-NEXT: ucomiss %xmm1, %xmm0
+; CMOV-NEXT: jne [[TBB:.LBB[0-9_]+]]
+; CMOV-NEXT: jp [[TBB]]
+; CMOV-NEXT: movaps %xmm2, %xmm3
+; CMOV-NEXT: [[TBB]]:
+; CMOV-NEXT: movaps %xmm3, %xmm0
+; CMOV-NEXT: retq
+
+; NOCMOV-NEXT: flds 8(%esp)
+; NOCMOV-NEXT: flds 4(%esp)
+; NOCMOV-NEXT: fucompp
+; NOCMOV-NEXT: fnstsw %ax
+; NOCMOV-NEXT: sahf
+; NOCMOV-NEXT: leal 20(%esp), %eax
+; NOCMOV-NEXT: jne [[TBB:.LBB[0-9_]+]]
+; NOCMOV-NEXT: jp [[TBB]]
+; NOCMOV-NEXT: leal 12(%esp), %eax
+; NOCMOV-NEXT: [[TBB]]:
+; NOCMOV-NEXT: fldl (%eax)
+; NOCMOV-NEXT: retl
+define double @test_select_fcmp_oeq_f64(float %a, float %b, double %c, double %d) #0 {
+entry:
+ %cmp = fcmp oeq float %a, %b
+ %r = select i1 %cmp, double %c, double %d
+ ret double %r
+}
+
+; CHECK-LABEL: test_select_fcmp_oeq_v4i32:
+
+; CMOV-NEXT: ucomiss %xmm1, %xmm0
+; CMOV-NEXT: jne [[TBB:.LBB[0-9_]+]]
+; CMOV-NEXT: jp [[TBB]]
+; CMOV-NEXT: movaps %xmm2, %xmm3
+; CMOV-NEXT: [[TBB]]:
+; CMOV-NEXT: movaps %xmm3, %xmm0
+; CMOV-NEXT: retq
+
+; NOCMOV-NEXT: pushl %edi
+; NOCMOV-NEXT: pushl %esi
+; NOCMOV-NEXT: flds 20(%esp)
+; NOCMOV-NEXT: flds 16(%esp)
+; NOCMOV-NEXT: fucompp
+; NOCMOV-NEXT: fnstsw %ax
+; NOCMOV-NEXT: sahf
+; NOCMOV-NEXT: leal 40(%esp), %eax
+; NOCMOV-NEXT: jne [[TBB:.LBB[0-9_]+]]
+; NOCMOV-NEXT: jp [[TBB]]
+; NOCMOV-NEXT: leal 24(%esp), %eax
+; NOCMOV-NEXT: [[TBB]]:
+; NOCMOV-NEXT: movl (%eax), %eax
+; NOCMOV-NEXT: leal 44(%esp), %ecx
+; NOCMOV-NEXT: jne [[TBB:.LBB[0-9_]+]]
+; NOCMOV-NEXT: jp [[TBB]]
+; NOCMOV-NEXT: leal 28(%esp), %ecx
+; NOCMOV-NEXT: [[TBB]]:
+; NOCMOV-NEXT: movl (%ecx), %ecx
+; NOCMOV-NEXT: leal 48(%esp), %esi
+; NOCMOV-NEXT: jne [[TBB:.LBB[0-9_]+]]
+; NOCMOV-NEXT: jp [[TBB]]
+; NOCMOV-NEXT: leal 32(%esp), %esi
+; NOCMOV-NEXT: [[TBB]]:
+; NOCMOV-NEXT: movl 12(%esp), %edx
+; NOCMOV-NEXT: movl (%esi), %esi
+; NOCMOV-NEXT: leal 52(%esp), %edi
+; NOCMOV-NEXT: jne [[TBB:.LBB[0-9_]+]]
+; NOCMOV-NEXT: jp [[TBB]]
+; NOCMOV-NEXT: leal 36(%esp), %edi
+; NOCMOV-NEXT: [[TBB]]:
+; NOCMOV-NEXT: movl (%edi), %edi
+; NOCMOV-NEXT: movl %edi, 12(%edx)
+; NOCMOV-NEXT: movl %esi, 8(%edx)
+; NOCMOV-NEXT: movl %ecx, 4(%edx)
+; NOCMOV-NEXT: movl %eax, (%edx)
+; NOCMOV-NEXT: popl %esi
+; NOCMOV-NEXT: popl %edi
+; NOCMOV-NEXT: retl $4
+define <4 x i32> @test_select_fcmp_oeq_v4i32(float %a, float %b, <4 x i32> %c, <4 x i32> %d) #0 {
+entry:
+ %cmp = fcmp oeq float %a, %b
+ %r = select i1 %cmp, <4 x i32> %c, <4 x i32> %d
+ ret <4 x i32> %r
+}
+
+; Also make sure we catch the original code-sequence of interest:
+
+; CMOV: [[ONE_F32_LCPI:.LCPI.*]]:
+; CMOV-NEXT: .long 1065353216
+
+; CHECK-LABEL: test_zext_fcmp_une:
+; CMOV-NEXT: ucomiss %xmm1, %xmm0
+; CMOV-NEXT: movss [[ONE_F32_LCPI]](%rip), %xmm0
+; CMOV-NEXT: jne [[TBB:.LBB[0-9_]+]]
+; CMOV-NEXT: jp [[TBB]]
+; CMOV-NEXT: xorps %xmm0, %xmm0
+; CMOV-NEXT: [[TBB]]:
+; CMOV-NEXT: retq
+
+; NOCMOV: jne
+; NOCMOV-NEXT: jp
+define float @test_zext_fcmp_une(float %a, float %b) #0 {
+entry:
+ %cmp = fcmp une float %a, %b
+ %conv1 = zext i1 %cmp to i32
+ %conv2 = sitofp i32 %conv1 to float
+ ret float %conv2
+}
+
+; CMOV: [[ONE_F32_LCPI:.LCPI.*]]:
+; CMOV-NEXT: .long 1065353216
+
+; CHECK-LABEL: test_zext_fcmp_oeq:
+; CMOV-NEXT: ucomiss %xmm1, %xmm0
+; CMOV-NEXT: xorps %xmm0, %xmm0
+; CMOV-NEXT: jne [[TBB:.LBB[0-9_]+]]
+; CMOV-NEXT: jp [[TBB]]
+; CMOV-NEXT: movss [[ONE_F32_LCPI]](%rip), %xmm0
+; CMOV-NEXT: [[TBB]]:
+; CMOV-NEXT: retq
+
+; NOCMOV: jne
+; NOCMOV-NEXT: jp
+define float @test_zext_fcmp_oeq(float %a, float %b) #0 {
+entry:
+ %cmp = fcmp oeq float %a, %b
+ %conv1 = zext i1 %cmp to i32
+ %conv2 = sitofp i32 %conv1 to float
+ ret float %conv2
+}
+
+attributes #0 = { nounwind }
generated by cgit v1.1 at 2024-12-22 11:32:19 +0000