It's not necessary to do rounding for alloca operations when the requested

alignment is equal to the stack alignment.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40004 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 47 insertions, 0 deletions

diff --git a/test/CodeGen/X86/vec_ss_load_fold.ll b/test/CodeGen/X86/vec_ss_load_fold.ll
new file mode 100644
index 0000000..1c9f6f1
--- /dev/null
+++ b/test/CodeGen/X86/vec_ss_load_fold.ll
@@ -0,0 +1,47 @@
+; RUN: llvm-upgrade < %s | llvm-as | llc -march=x86 -mattr=+sse,+sse2 -o %t -f
+; RUN: grep minss %t | grep CPI | wc -l | grep 2
+; RUN: grep CPI   %t | not grep movss
+
+target endian = little
+target pointersize = 32
+target triple = "i686-apple-darwin8.7.2"
+
+implementation   ; Functions:
+
+ushort %test1(float %f) {
+        %tmp = insertelement <4 x float> undef, float %f, uint 0                ; <<4 x float>> [#uses=1]
+        %tmp10 = insertelement <4 x float> %tmp, float 0.000000e+00, uint 1             ; <<4 x float>> [#uses=1]
+        %tmp11 = insertelement <4 x float> %tmp10, float 0.000000e+00, uint 2           ; <<4 x float>> [#uses=1]
+        %tmp12 = insertelement <4 x float> %tmp11, float 0.000000e+00, uint 3           ; <<4 x float>> [#uses=1]
+        %tmp28 = tail call <4 x float> %llvm.x86.sse.sub.ss( <4 x float> %tmp12, <4 x float> < float 1.000000e+00, float 0.000000e+00, float 0.000000e+00, float 0.000000e+00 > )               ; <<4 x float>> [#uses=1]
+        %tmp37 = tail call <4 x float> %llvm.x86.sse.mul.ss( <4 x float> %tmp28, <4 x float> < float 5.000000e-01, float 0.000000e+00, float 0.000000e+00, float 0.000000e+00 > )               ; <<4 x float>> [#uses=1]
+        %tmp48 = tail call <4 x float> %llvm.x86.sse.min.ss( <4 x float> %tmp37, <4 x float> < float 6.553500e+04, float 0.000000e+00, float 0.000000e+00, float 0.000000e+00 > )               ; <<4 x float>> [#uses=1]
+        %tmp59 = tail call <4 x float> %llvm.x86.sse.max.ss( <4 x float> %tmp48, <4 x float> zeroinitializer )          ; <<4 x float>> [#uses=1]
+        %tmp = tail call int %llvm.x86.sse.cvttss2si( <4 x float> %tmp59 )              ; <int> [#uses=1]
+        %tmp69 = cast int %tmp to ushort                ; <ushort> [#uses=1]
+        ret ushort %tmp69
+}
+
+ushort %test2(float %f) {
+        %tmp28 = sub float %f, 1.000000e+00             ; <float> [#uses=1]
+        %tmp37 = mul float %tmp28, 5.000000e-01         ; <float> [#uses=1]
+        %tmp375 = insertelement <4 x float> undef, float %tmp37, uint 0         ; <<4 x float>> [#uses=1]
+        %tmp48 = tail call <4 x float> %llvm.x86.sse.min.ss( <4 x float> %tmp375, <4 x float> < float 6.553500e+04, float undef, float undef, float undef > )           ; <<4 x float>> [#uses=1]
+        %tmp59 = tail call <4 x float> %llvm.x86.sse.max.ss( <4 x float> %tmp48, <4 x float> < float 0.000000e+00, float undef, float undef, float undef > )            ; <<4 x float>> [#uses=1]
+        %tmp = tail call int %llvm.x86.sse.cvttss2si( <4 x float> %tmp59 )              ; <int> [#uses=1]
+        %tmp69 = cast int %tmp to ushort                ; <ushort> [#uses=1]
+        ret ushort %tmp69
+}
+
+
+declare <4 x float> %llvm.x86.sse.sub.ss(<4 x float>, <4 x float>)
+
+declare <4 x float> %llvm.x86.sse.mul.ss(<4 x float>, <4 x float>)
+
+declare <4 x float> %llvm.x86.sse.min.ss(<4 x float>, <4 x float>)
+
+declare <4 x float> %llvm.x86.sse.max.ss(<4 x float>, <4 x float>)
+
+declare int %llvm.x86.sse.cvttss2si(<4 x float>)
+
+