llvm-mirror/test/Analysis/BasicAA/2009-10-13-AtomicModRef.ll

; RUN: opt -basicaa -gvn -instcombine -S < %s | FileCheck %s
target datalayout = "E-p:64:64:64-a0:0:8-f32:32:32-f64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-v64:64:64-v128:128:128"

define i8 @foo(i8* %ptr) {
  %P = getelementptr i8* %ptr, i32 0
  %Q = getelementptr i8* %ptr, i32 1
; CHECK: getelementptr
  %X = load i8* %P
  %Y = atomicrmw add i8* %Q, i8 1 monotonic
  %Z = load i8* %P
; CHECK-NOT: = load
  %A = sub i8 %X, %Z
  ret i8 %A
; CHECK: ret i8 0
}
Make BasicAliasAnalysis a normal AliasAnalysis implementation which does normal initialization and normal chaining. Change the default AliasAnalysis implementation to NoAlias. Update StandardCompileOpts.h and friends to explicitly request BasicAliasAnalysis. Update tests to explicitly request -basicaa. llvm-svn: 116720 2010-10-18 20:04:47 +02:00			`; RUN: opt -basicaa -gvn -instcombine -S < %s \| FileCheck %s`
Make opt default to not adding a target data string and update tests that depend on target data to supply it within the test llvm-svn: 85900 2009-11-03 16:29:06 +01:00			`target datalayout = "E-p:64:64:64-a0:0:8-f32:32:32-f64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-v64:64:64-v128:128:128"`
Teach BasicAA a little something about the atomic intrinsics: they can only modify through the pointer they're given. llvm-svn: 83959 2009-10-13 09:48:38 +02:00
Make use of the result of the loads even though that means adding -instcombine. llvm-svn: 84125 2009-10-14 21:02:13 +02:00			`define i8 @foo(i8* %ptr) {`
Teach BasicAA a little something about the atomic intrinsics: they can only modify through the pointer they're given. llvm-svn: 83959 2009-10-13 09:48:38 +02:00			`%P = getelementptr i8* %ptr, i32 0`
			`%Q = getelementptr i8* %ptr, i32 1`
			`; CHECK: getelementptr`
			`%X = load i8* %P`
Enhance alias analysis for atomic instructions a bit. Upgrade a couple alias-analysis tests to the new atomic instructions. llvm-svn: 140557 2011-09-26 22:15:28 +02:00			`%Y = atomicrmw add i8* %Q, i8 1 monotonic`
Teach BasicAA a little something about the atomic intrinsics: they can only modify through the pointer they're given. llvm-svn: 83959 2009-10-13 09:48:38 +02:00			`%Z = load i8* %P`
			`; CHECK-NOT: = load`
Make use of the result of the loads even though that means adding -instcombine. llvm-svn: 84125 2009-10-14 21:02:13 +02:00			`%A = sub i8 %X, %Z`
			`ret i8 %A`
			`; CHECK: ret i8 0`
Teach BasicAA a little something about the atomic intrinsics: they can only modify through the pointer they're given. llvm-svn: 83959 2009-10-13 09:48:38 +02:00			`}`