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| author | Michael Zolotukhin <mzolotukhin@apple.com> | 2014-04-30 19:17:32 +0000 |
|---|---|---|
| committer | Michael Zolotukhin <mzolotukhin@apple.com> | 2014-04-30 19:17:32 +0000 |
| commit | c80b103a2b1659482332b41c42f49137f3a5c069 (patch) | |
| tree | c079a356779ab5deb88238fb2baacd5db7c69c0c /test/Transforms/ConstantHoisting/X86/large-immediate.ll | |
| parent | 4aef7270c975ed62788ce5956a1763101113bc6f (diff) | |
| download | llvm-c80b103a2b1659482332b41c42f49137f3a5c069.tar.gz llvm-c80b103a2b1659482332b41c42f49137f3a5c069.tar.bz2 llvm-c80b103a2b1659482332b41c42f49137f3a5c069.tar.xz | |
[X86] Never hoist the shift value of a shift instruction.
There is no need to check if we want to hoist the immediate value of an
shift instruction. Simply return TCC_Free right away.
This change is like r206101, but for X86.
rdar://problem/16190769
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207692 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms/ConstantHoisting/X86/large-immediate.ll')
| -rw-r--r-- | test/Transforms/ConstantHoisting/X86/large-immediate.ll | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/test/Transforms/ConstantHoisting/X86/large-immediate.ll b/test/Transforms/ConstantHoisting/X86/large-immediate.ll new file mode 100644 index 0000000000..bd7fa40e9c --- /dev/null +++ b/test/Transforms/ConstantHoisting/X86/large-immediate.ll @@ -0,0 +1,18 @@ +; RUN: opt -mtriple=x86_64-darwin-unknown -S -consthoist < %s | FileCheck %s + +define i128 @test1(i128 %a) nounwind { +; CHECK-LABEL: test1 +; CHECK: %const = bitcast i128 12297829382473034410122878 to i128 + %1 = add i128 %a, 12297829382473034410122878 + %2 = add i128 %1, 12297829382473034410122878 + ret i128 %2 +} + +; Check that we don't hoist the shift value of a shift instruction. +define i512 @test2(i512 %a) nounwind { +; CHECK-LABEL: test2 +; CHECK-NOT: %const = bitcast i512 504 to i512 + %1 = shl i512 %a, 504 + %2 = ashr i512 %1, 504 + ret i512 %2 +} |