llvm-6502/test/Transforms/InstCombine/memset-1.ll
Meador Inge 26ebe398f2 instcombine: Migrate memset optimizations
This patch migrates the memset optimizations from the simplify-libcalls
pass into the instcombine library call simplifier.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167689 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-11 06:49:03 +00:00

18 lines
575 B
LLVM

; Test that the memset library call simplifier works correctly.
;
; RUN: opt < %s -instcombine -S | FileCheck %s
target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
declare i8* @memset(i8*, i32, i32)
; Check memset(mem1, val, size) -> llvm.memset(mem1, val, size, 1).
define i8* @test_simplify1(i8* %mem, i32 %val, i32 %size) {
; CHECK: @test_simplify1
%ret = call i8* @memset(i8* %mem, i32 %val, i32 %size)
; CHECK: call void @llvm.memset
ret i8* %ret
; CHECK: ret i8* %mem
}