diff options
| author | Nicolai Hahnle <nhaehnle@gmail.com> | 2015-12-15 17:24:15 +0000 |
|---|---|---|
| committer | Nicolai Hahnle <nhaehnle@gmail.com> | 2015-12-15 17:24:15 +0000 |
| commit | 78fd4f087b0832bdfef1c7db54bc234002e2ff30 (patch) | |
| tree | ee4aa587893ee78d39d2ff516ba4bf67dd358d0c /llvm/test/Transforms | |
| parent | 8f307217c3887087f22f3bef30bbdeeb00ee5299 (diff) | |
| download | bcm5719-llvm-78fd4f087b0832bdfef1c7db54bc234002e2ff30.tar.gz bcm5719-llvm-78fd4f087b0832bdfef1c7db54bc234002e2ff30.zip | |
AMDGPU: mark ldexp LibCalls as unavailable
Summary:
The LibCallSimplifier will turn llvm.exp2.* intrinsics into ldexp* libcalls
which do not make sense with the AMDGPU backend.
In the long run, we'll want an llvm.ldexp.* intrinsic to properly make use of
this optimization, but this works around the problem for now.
See also: http://reviews.llvm.org/D14327 (suggested llvm.ldexp.* implementation)
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=92709
Reviewers: arsenm, tstellarAMD
Differential Revision: http://reviews.llvm.org/D14990
llvm-svn: 255658
Diffstat (limited to 'llvm/test/Transforms')
| -rw-r--r-- | llvm/test/Transforms/InstCombine/exp2-1.ll | 19 |
1 files changed, 9 insertions, 10 deletions
diff --git a/llvm/test/Transforms/InstCombine/exp2-1.ll b/llvm/test/Transforms/InstCombine/exp2-1.ll index 8e6a0e0d93f..b6a56b9a9a7 100644 --- a/llvm/test/Transforms/InstCombine/exp2-1.ll +++ b/llvm/test/Transforms/InstCombine/exp2-1.ll @@ -1,7 +1,8 @@ ; Test that the exp2 library call simplifier works correctly. ; -; RUN: opt < %s -instcombine -S | FileCheck %s -; RUN: opt < %s -instcombine -S -mtriple=i386-pc-win32 | FileCheck %s -check-prefix=CHECK-WIN +; RUN: opt < %s -instcombine -S | FileCheck %s -check-prefix=CHECK -check-prefix=INTRINSIC -check-prefix=LDEXP -check-prefix=LDEXPF +; RUN: opt < %s -instcombine -S -mtriple=i386-pc-win32 | FileCheck %s -check-prefix=INTRINSIC -check-prefix=LDEXP -check-prefix=NOLDEXPF +; RUN: opt < %s -instcombine -S -mtriple=amdgcn-unknown-unknown | FileCheck %s -check-prefix=INTRINSIC -check-prefix=NOLDEXP -check-prefix=NOLDEXPF target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128" @@ -80,21 +81,19 @@ declare double @llvm.exp2.f64(double) declare float @llvm.exp2.f32(float) define double @test_simplify9(i8 zeroext %x) { -; CHECK-LABEL: @test_simplify9( -; CHECK-WIN-LABEL: @test_simplify9( +; INTRINSIC-LABEL: @test_simplify9( %conv = uitofp i8 %x to double %ret = call double @llvm.exp2.f64(double %conv) -; CHECK: call double @ldexp -; CHECK-WIN: call double @ldexp +; LDEXP: call double @ldexp +; NOLDEXP-NOT: call double @ldexp ret double %ret } define float @test_simplify10(i8 zeroext %x) { -; CHECK-LABEL: @test_simplify10( -; CHECK-WIN-LABEL: @test_simplify10( +; INTRINSIC-LABEL: @test_simplify10( %conv = uitofp i8 %x to float %ret = call float @llvm.exp2.f32(float %conv) -; CHECK: call float @ldexpf -; CHECK-WIN-NOT: call float @ldexpf +; LDEXPF: call float @ldexpf +; NOLDEXPF-NOT: call float @ldexpf ret float %ret } |
