1 ; RUN: opt -S < %s -instcombine | FileCheck %s 2 3 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64" 4 target triple = "x86_64-apple-macosx10.7.0" 5 6 ; Check transforms involving atomic operations 7 8 define i32* @test1(i8** %p) { 9 ; CHECK-LABEL: define i32* @test1( 10 ; CHECK: load atomic i8** %p monotonic, align 8 11 %c = bitcast i8** %p to i32** 12 %r = load atomic i32** %c monotonic, align 8 13 ret i32* %r 14 } 15 16 define i32 @test2(i32* %p) { 17 ; CHECK-LABEL: define i32 @test2( 18 ; CHECK: %x = load atomic i32* %p seq_cst, align 4 19 ; CHECK: shl i32 %x, 1 20 %x = load atomic i32* %p seq_cst, align 4 21 %y = load i32* %p, align 4 22 %z = add i32 %x, %y 23 ret i32 %z 24 } 25
