llvm/test/CodeGen/X86/codegen-prepare-extload.ll
2011-02-22 07:19:28 +00:00

22 lines
495 B
LLVM

; RUN: llc < %s -mtriple=x86_64-linux | FileCheck %s
; RUN: llc < %s -mtriple=x86_64-win64 | FileCheck %s
; rdar://7304838
; CodeGenPrepare should move the zext into the block with the load
; so that SelectionDAG can select it with the load.
; CHECK: movzbl ({{%rdi|%rcx}}), %eax
define void @foo(i8* %p, i32* %q) {
entry:
%t = load i8* %p
%a = icmp slt i8 %t, 20
br i1 %a, label %true, label %false
true:
%s = zext i8 %t to i32
store i32 %s, i32* %q
ret void
false:
ret void
}