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author | Devang Patel <dpatel@apple.com> | 2011-10-10 19:09:20 +0000 |
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committer | Devang Patel <dpatel@apple.com> | 2011-10-10 19:09:20 +0000 |
commit | 9ac743a4ee61cb845bbe22a2f6898f38c2adafce (patch) | |
tree | c64733717dd89e7c30b5110cd18a084bc3726c04 /test/CodeGen/X86 | |
parent | 5a57168a55f23cff1f0d1c7ba4183b4182665e46 (diff) | |
download | external_llvm-9ac743a4ee61cb845bbe22a2f6898f38c2adafce.zip external_llvm-9ac743a4ee61cb845bbe22a2f6898f38c2adafce.tar.gz external_llvm-9ac743a4ee61cb845bbe22a2f6898f38c2adafce.tar.bz2 |
Add dominance check for the instruction being hoisted.
For example, MachineLICM should not hoist a load that is not guaranteed to be executed.
Radar 10254254.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@141569 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/X86')
-rw-r--r-- | test/CodeGen/X86/licm-dominance.ll | 56 | ||||
-rw-r--r-- | test/CodeGen/X86/licm-nested.ll | 2 |
2 files changed, 57 insertions, 1 deletions
diff --git a/test/CodeGen/X86/licm-dominance.ll b/test/CodeGen/X86/licm-dominance.ll new file mode 100644 index 0000000..cf3f2e8 --- /dev/null +++ b/test/CodeGen/X86/licm-dominance.ll @@ -0,0 +1,56 @@ +; RUN: llc < %s | FileCheck %s + +; MachineLICM should check dominance before hoisting instructions. +; CHECK: xorb %cl, %cl +; CHECK-NEXT: testb %cl, %cl + +target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64" +target triple = "x86_64-apple-macosx10.7.2" + +define void @CMSColorWorldCreateParametricData() nounwind uwtable optsize ssp { +entry: + br label %for.body.i + +for.body.i: ; preds = %entry + br i1 undef, label %for.inc.i, label %land.lhs.true21.i + +land.lhs.true21.i: ; preds = %for.body.i + br i1 undef, label %if.then26.i, label %for.inc.i + +if.then26.i: ; preds = %land.lhs.true21.i + br i1 undef, label %if.else.i.i, label %if.then.i.i + +if.then.i.i: ; preds = %if.then26.i + unreachable + +if.else.i.i: ; preds = %if.then26.i + br i1 undef, label %lor.lhs.false.i.i, label %if.then116.i.i + +lor.lhs.false.i.i: ; preds = %if.else.i.i + br i1 undef, label %lor.lhs.false104.i.i, label %if.then116.i.i + +lor.lhs.false104.i.i: ; preds = %lor.lhs.false.i.i + br i1 undef, label %lor.lhs.false108.i.i, label %if.then116.i.i + +lor.lhs.false108.i.i: ; preds = %lor.lhs.false104.i.i + br i1 undef, label %lor.lhs.false112.i.i, label %if.then116.i.i + +lor.lhs.false112.i.i: ; preds = %lor.lhs.false108.i.i + br i1 undef, label %if.else232.i.i, label %if.then116.i.i + +if.then116.i.i: ; preds = %lor.lhs.false112.i.i, %lor.lhs.false108.i.i, %lor.lhs.false104.i.i, %lor.lhs.false.i.i, %if.else.i.i + unreachable + +if.else232.i.i: ; preds = %lor.lhs.false112.i.i + br label %for.inc.i + +for.inc.i: ; preds = %if.else232.i.i, %land.lhs.true21.i, %for.body.i + %cmp17.i = icmp ult i64 undef, undef + br i1 %cmp17.i, label %for.body.i, label %if.end28.i + +if.end28.i: ; preds = %for.inc.i, %if.then10.i, %if.then6.i + unreachable + +createTransformParams.exit: ; preds = %land.lhs.true3.i, %if.then.i, %land.lhs.true.i, %entry + ret void +} diff --git a/test/CodeGen/X86/licm-nested.ll b/test/CodeGen/X86/licm-nested.ll index b0105ac..901d987 100644 --- a/test/CodeGen/X86/licm-nested.ll +++ b/test/CodeGen/X86/licm-nested.ll @@ -1,4 +1,4 @@ -; RUN: llc -mtriple=x86_64-apple-darwin -march=x86-64 < %s -o /dev/null -stats -info-output-file - | grep machine-licm | grep 3 +; RUN: llc -mtriple=x86_64-apple-darwin -march=x86-64 < %s -o /dev/null -stats -info-output-file - | grep machine-licm | grep 2 ; MachineLICM should be able to hoist the symbolic addresses out of ; the inner loops. |