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view test/CodeGen/X86/pr14088.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 |
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; RUN: llc -mtriple x86_64-linux -mcpu core2 -verify-machineinstrs %s -o - | FileCheck %s define i32 @f(i1 %foo, i16* %tm_year2, i8* %bar, i16 %zed, i32 %zed2) { entry: br i1 %foo, label %return, label %if.end if.end: %rem = srem i32 %zed2, 100 %conv3 = trunc i32 %rem to i16 store i16 %conv3, i16* %tm_year2 %sext = shl i32 %rem, 16 %conv5 = ashr exact i32 %sext, 16 %div = sdiv i32 %conv5, 10 %conv6 = trunc i32 %div to i8 store i8 %conv6, i8* %bar br label %return return: %retval.0 = phi i32 [ 0, %if.end ], [ -1, %entry ] ret i32 %retval.0 } ; We were miscompiling this and using %ax instead of %cx in the movw ; in the following sequence: ; movswl %cx, %ecx ; movw %cx, (%rsi) ; movslq %ecx, %rcx ; ; We can't produce the above sequence without special SD-level ; heuristics. Now we produce this: ; CHECK: movw %ax, (%rsi) ; CHECK: cwtl ; CHECK: cltq