Mercurial > hg > CbC > CbC_llvm
diff test/CodeGen/X86/uint64-to-float.ll @ 0:95c75e76d11b LLVM3.4
LLVM 3.4
| author | Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> |
|---|---|
| date | Thu, 12 Dec 2013 13:56:28 +0900 |
| parents | |
| children | afa8332a0e37 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/test/CodeGen/X86/uint64-to-float.ll Thu Dec 12 13:56:28 2013 +0900 @@ -0,0 +1,22 @@ +; RUN: llc < %s -mcpu=generic -march=x86-64 | FileCheck %s +; Verify that we are using the efficient uitofp --> sitofp lowering illustrated +; by the compiler_rt implementation of __floatundisf. +; <rdar://problem/8493982> + +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-darwin10.0.0" + +; CHECK: testq %rdi, %rdi +; CHECK-NEXT: js LBB0_1 +; CHECK: cvtsi2ss +; CHECK-NEXT: ret +; CHECK: LBB0_1 +; CHECK: shrq +; CHECK-NEXT: andq +; CHECK-NEXT: orq +; CHECK-NEXT: cvtsi2ss +define float @test(i64 %a) { +entry: + %b = uitofp i64 %a to float + ret float %b +}