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llvm-project/llvm/test/Analysis/MemorySSA/optimize-use.ll

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[MemorySSA] Limit clobber walks. Summary: This patch limits all getClobberingMemoryAccess() walks to MaxCheckLimit. Reviewers: george.burgess.iv Subscribers: sanjoy, jlebar, Prazek, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D59569 llvm-svn: 357319
2019-03-30 05:56:09 +08:00
; RUN: opt -aa-pipeline=basic-aa -passes='print<memoryssa>,verify<memoryssa>' -disable-output < %s 2>&1 | FileCheck %s --check-prefixes=CHECK,NOLIMIT
; RUN: opt -memssa-check-limit=0 -aa-pipeline=basic-aa -passes='print<memoryssa>,verify<memoryssa>' -disable-output < %s 2>&1 | FileCheck %s --check-prefixes=CHECK,LIMIT
This patch adds MemorySSA to LLVM. Please see include/llvm/Transforms/Utils/MemorySSA.h for a description of MemorySSA, and what it does. Differential Revision: http://reviews.llvm.org/D7864 llvm-svn: 259595
2016-02-03 06:46:49 +08:00
; Function Attrs: ssp uwtable
define i32 @main() {
entry:
; CHECK: 1 = MemoryDef(liveOnEntry)
; CHECK-NEXT: %call = call noalias i8* @_Znwm(i64 4)
%call = call noalias i8* @_Znwm(i64 4)
%0 = bitcast i8* %call to i32*
; CHECK: 2 = MemoryDef(1)
; CHECK-NEXT: %call1 = call noalias i8* @_Znwm(i64 4)
%call1 = call noalias i8* @_Znwm(i64 4)
%1 = bitcast i8* %call1 to i32*
; CHECK: 3 = MemoryDef(2)
; CHECK-NEXT: store i32 5, i32* %0, align 4
store i32 5, i32* %0, align 4
; CHECK: 4 = MemoryDef(3)
; CHECK-NEXT: store i32 7, i32* %1, align 4
store i32 7, i32* %1, align 4
[MemorySSA] Limit clobber walks. Summary: This patch limits all getClobberingMemoryAccess() walks to MaxCheckLimit. Reviewers: george.burgess.iv Subscribers: sanjoy, jlebar, Prazek, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D59569 llvm-svn: 357319
2019-03-30 05:56:09 +08:00
; NOLIMIT: MemoryUse(3) MustAlias
; NOLIMIT-NEXT: %2 = load i32, i32* %0, align 4
[MemorySSA] Report unoptimized as None, not MayAlias.
2020-09-16 13:52:42 +08:00
; LIMIT: MemoryUse(4)
[MemorySSA] Limit clobber walks. Summary: This patch limits all getClobberingMemoryAccess() walks to MaxCheckLimit. Reviewers: george.burgess.iv Subscribers: sanjoy, jlebar, Prazek, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D59569 llvm-svn: 357319
2019-03-30 05:56:09 +08:00
; LIMIT-NEXT: %2 = load i32, i32* %0, align 4
This patch adds MemorySSA to LLVM. Please see include/llvm/Transforms/Utils/MemorySSA.h for a description of MemorySSA, and what it does. Differential Revision: http://reviews.llvm.org/D7864 llvm-svn: 259595
2016-02-03 06:46:49 +08:00
%2 = load i32, i32* %0, align 4
[MemorySSA] Limit clobber walks. Summary: This patch limits all getClobberingMemoryAccess() walks to MaxCheckLimit. Reviewers: george.burgess.iv Subscribers: sanjoy, jlebar, Prazek, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D59569 llvm-svn: 357319
2019-03-30 05:56:09 +08:00
; NOLIMIT: MemoryUse(4) MustAlias
; NOLIMIT-NEXT: %3 = load i32, i32* %1, align 4
[MemorySSA] Report unoptimized as None, not MayAlias.
2020-09-16 13:52:42 +08:00
; LIMIT: MemoryUse(4)
[MemorySSA] Limit clobber walks. Summary: This patch limits all getClobberingMemoryAccess() walks to MaxCheckLimit. Reviewers: george.burgess.iv Subscribers: sanjoy, jlebar, Prazek, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D59569 llvm-svn: 357319
2019-03-30 05:56:09 +08:00
; LIMIT-NEXT: %3 = load i32, i32* %1, align 4
This patch adds MemorySSA to LLVM. Please see include/llvm/Transforms/Utils/MemorySSA.h for a description of MemorySSA, and what it does. Differential Revision: http://reviews.llvm.org/D7864 llvm-svn: 259595
2016-02-03 06:46:49 +08:00
%3 = load i32, i32* %1, align 4
[MemorySSA] Limit clobber walks. Summary: This patch limits all getClobberingMemoryAccess() walks to MaxCheckLimit. Reviewers: george.burgess.iv Subscribers: sanjoy, jlebar, Prazek, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D59569 llvm-svn: 357319
2019-03-30 05:56:09 +08:00
; NOLIMIT: MemoryUse(3) MustAlias
; NOLIMIT-NEXT: %4 = load i32, i32* %0, align 4
[MemorySSA] Report unoptimized as None, not MayAlias.
2020-09-16 13:52:42 +08:00
; LIMIT: MemoryUse(4)
[MemorySSA] Limit clobber walks. Summary: This patch limits all getClobberingMemoryAccess() walks to MaxCheckLimit. Reviewers: george.burgess.iv Subscribers: sanjoy, jlebar, Prazek, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D59569 llvm-svn: 357319
2019-03-30 05:56:09 +08:00
; LIMIT-NEXT: %4 = load i32, i32* %0, align 4
This patch adds MemorySSA to LLVM. Please see include/llvm/Transforms/Utils/MemorySSA.h for a description of MemorySSA, and what it does. Differential Revision: http://reviews.llvm.org/D7864 llvm-svn: 259595
2016-02-03 06:46:49 +08:00
%4 = load i32, i32* %0, align 4
[MemorySSA] Limit clobber walks. Summary: This patch limits all getClobberingMemoryAccess() walks to MaxCheckLimit. Reviewers: george.burgess.iv Subscribers: sanjoy, jlebar, Prazek, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D59569 llvm-svn: 357319
2019-03-30 05:56:09 +08:00
; NOLIMIT: MemoryUse(4) MustAlias
; NOLIMIT-NEXT: %5 = load i32, i32* %1, align 4
[MemorySSA] Report unoptimized as None, not MayAlias.
2020-09-16 13:52:42 +08:00
; LIMIT: MemoryUse(4)
[MemorySSA] Limit clobber walks. Summary: This patch limits all getClobberingMemoryAccess() walks to MaxCheckLimit. Reviewers: george.burgess.iv Subscribers: sanjoy, jlebar, Prazek, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D59569 llvm-svn: 357319
2019-03-30 05:56:09 +08:00
; LIMIT-NEXT: %5 = load i32, i32* %1, align 4
This patch adds MemorySSA to LLVM. Please see include/llvm/Transforms/Utils/MemorySSA.h for a description of MemorySSA, and what it does. Differential Revision: http://reviews.llvm.org/D7864 llvm-svn: 259595
2016-02-03 06:46:49 +08:00
%5 = load i32, i32* %1, align 4
%add = add nsw i32 %3, %5
ret i32 %add
}
[MemorySSA] Limit clobber walks. Summary: This patch limits all getClobberingMemoryAccess() walks to MaxCheckLimit. Reviewers: george.burgess.iv Subscribers: sanjoy, jlebar, Prazek, llvm-commits Tags: #llvm Differential Revision: https://reviews.llvm.org/D59569 llvm-svn: 357319
2019-03-30 05:56:09 +08:00
This patch adds MemorySSA to LLVM. Please see include/llvm/Transforms/Utils/MemorySSA.h for a description of MemorySSA, and what it does. Differential Revision: http://reviews.llvm.org/D7864 llvm-svn: 259595
2016-02-03 06:46:49 +08:00
declare noalias i8* @_Znwm(i64)