Mercurial > hg > Members > tobaru > cbc > CbC_llvm
view test/CodeGen/X86/cmov-into-branch.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 | afa8332a0e37 |
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; RUN: llc -march=x86-64 -mcpu=core2 < %s | FileCheck %s ; cmp with single-use load, should not form cmov. define i32 @test1(double %a, double* nocapture %b, i32 %x, i32 %y) { %load = load double* %b, align 8 %cmp = fcmp olt double %load, %a %cond = select i1 %cmp, i32 %x, i32 %y ret i32 %cond ; CHECK-LABEL: test1: ; CHECK: ucomisd ; CHECK-NOT: cmov ; CHECK: j ; CHECK-NOT: cmov } ; Sanity check: no load. define i32 @test2(double %a, double %b, i32 %x, i32 %y) { %cmp = fcmp ogt double %a, %b %cond = select i1 %cmp, i32 %x, i32 %y ret i32 %cond ; CHECK-LABEL: test2: ; CHECK: ucomisd ; CHECK: cmov } ; Multiple uses of %a, should not form cmov. define i32 @test3(i32 %a, i32* nocapture %b, i32 %x) { %load = load i32* %b, align 4 %cmp = icmp ult i32 %load, %a %cond = select i1 %cmp, i32 %a, i32 %x ret i32 %cond ; CHECK-LABEL: test3: ; CHECK: cmpl ; CHECK-NOT: cmov ; CHECK: j ; CHECK-NOT: cmov } ; Multiple uses of the load. define i32 @test4(i32 %a, i32* nocapture %b, i32 %x, i32 %y) { %load = load i32* %b, align 4 %cmp = icmp ult i32 %load, %a %cond = select i1 %cmp, i32 %x, i32 %y %add = add i32 %cond, %load ret i32 %add ; CHECK-LABEL: test4: ; CHECK: cmpl ; CHECK: cmov } ; Multiple uses of the cmp. define i32 @test5(i32 %a, i32* nocapture %b, i32 %x, i32 %y) { %load = load i32* %b, align 4 %cmp = icmp ult i32 %load, %a %cmp1 = icmp ugt i32 %load, %a %cond = select i1 %cmp1, i32 %a, i32 %y %cond5 = select i1 %cmp, i32 %cond, i32 %x ret i32 %cond5 ; CHECK-LABEL: test5: ; CHECK: cmpl ; CHECK: cmov ; CHECK: cmov }