Mercurial > hg > Members > tobaru > cbc > CbC_llvm
view test/CodeGen/X86/fp-une-cmp.ll @ 33:e4204d083e25
LLVM 3.5
author | Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp> |
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date | Thu, 12 Dec 2013 14:32:10 +0900 |
parents | 95c75e76d11b |
children | 1172e4bd9c6f |
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; RUN: llc < %s -march=x86 -mattr=sse4.1 | FileCheck %s ; <rdar://problem/7859988> ; Make sure we don't generate more jumps than we need to. We used to generate ; something like this: ; ; jne LBB0_1 ; jnp LBB0_2 ; LBB0_1: ; jmp LBB0_3 ; LBB0_2: ; addsd ... ; LBB0_3: ; ; Now we generate this: ; ; jne LBB0_2 ; jp LBB0_2 ; addsd ... ; LBB0_2: ; CHECK: func ; CHECK: jne [[LABEL:.*]] ; CHECK-NEXT: jp [[LABEL]] ; CHECK-NOT: jmp define float @func(float %x, float %y) nounwind readnone optsize ssp { entry: %0 = fpext float %x to double %1 = fpext float %y to double %2 = fmul double %0, %1 %3 = fcmp une double %2, 0.000000e+00 br i1 %3, label %bb2, label %bb1 bb1: %4 = fadd double %2, -1.000000e+00 br label %bb2 bb2: %.0.in = phi double [ %4, %bb1 ], [ %2, %entry ] %.0 = fptrunc double %.0.in to float ret float %.0 }