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[GVN] memoryssa implies no-memdep #149473

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Merged
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Jul 21, 2025
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[GVN] memoryssa implies no-memdep #149473

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4 changes: 4 additions & 0 deletions llvm/lib/Passes/PassBuilder.cpp
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Expand Up @@ -1189,9 +1189,13 @@ Expected<GVNOptions> parseGVNOptions(StringRef Params) {
} else if (ParamName == "split-backedge-load-pre") {
Result.setLoadPRESplitBackedge(Enable);
} else if (ParamName == "memdep") {
// MemDep and MemorySSA are mutually exclusive.
Result.setMemDep(Enable);
Result.setMemorySSA(!Enable);
} else if (ParamName == "memoryssa") {
// MemDep and MemorySSA are mutually exclusive.
Result.setMemorySSA(Enable);
Result.setMemDep(!Enable);
} else {
return make_error<StringError>(
formatv("invalid GVN pass parameter '{}'", ParamName).str(),
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2 changes: 1 addition & 1 deletion llvm/test/Transforms/GVN/assume.ll
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@@ -1,6 +1,6 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes=gvn -verify-analysis-invalidation -S | FileCheck --check-prefixes=CHECK,MDEP %s
; RUN: opt < %s -passes='gvn<memoryssa;no-memdep>' -verify-analysis-invalidation -S | FileCheck --check-prefixes=CHECK,MSSA %s
; RUN: opt < %s -passes='gvn<memoryssa>' -verify-analysis-invalidation -S | FileCheck --check-prefixes=CHECK,MSSA %s

declare void @llvm.assume(i1)
declare void @use(i1)
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2 changes: 1 addition & 1 deletion llvm/test/Transforms/GVN/basic.ll
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@@ -1,6 +1,6 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
; RUN: opt < %s -passes=gvn -S | FileCheck %s --check-prefixes=CHECK,MDEP
; RUN: opt < %s -passes='gvn<memoryssa;no-memdep>' -S | FileCheck --check-prefixes=CHECK,MSSA %s
; RUN: opt < %s -passes='gvn<memoryssa>' -S | FileCheck --check-prefixes=CHECK,MSSA %s

define i32 @main() {
; CHECK-LABEL: define i32 @main() {
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2 changes: 1 addition & 1 deletion llvm/test/Transforms/GVN/nonescaping.ll
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@@ -1,6 +1,6 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -S -passes=gvn 2>&1 | FileCheck %s --check-prefixes=CHECK,MDEP
; RUN: opt < %s -S -passes='gvn<memoryssa;no-memdep>' 2>&1 | FileCheck --check-prefixes=CHECK,MSSA %s
; RUN: opt < %s -S -passes='gvn<memoryssa>' 2>&1 | FileCheck --check-prefixes=CHECK,MSSA %s

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"

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2 changes: 1 addition & 1 deletion llvm/test/Transforms/GVN/phi.ll
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@@ -1,6 +1,6 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -passes=gvn < %s | FileCheck --check-prefixes=CHECK,MDEP %s
; RUN: opt -S -passes='gvn<memoryssa;no-memdep>' < %s | FileCheck %s
; RUN: opt -S -passes='gvn<memoryssa>' < %s | FileCheck %s


define i64 @test1(i1 %c, i64 %a, i64 %b) {
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2 changes: 1 addition & 1 deletion llvm/test/Transforms/GVN/pr14166.ll
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@@ -1,6 +1,6 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
; RUN: opt -disable-basic-aa -passes=gvn -S < %s | FileCheck %s --check-prefixes=CHECK,MDEP
; RUN: opt -disable-basic-aa -passes='gvn<memoryssa;no-memdep>' -S < %s | FileCheck --check-prefixes=CHECK,MSSA %s
; RUN: opt -disable-basic-aa -passes='gvn<memoryssa>' -S < %s | FileCheck --check-prefixes=CHECK,MSSA %s
target datalayout = "e-p:32:32:32"
define <2 x i32> @test1() {
; MDEP-LABEL: define <2 x i32> @test1() {
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2 changes: 1 addition & 1 deletion llvm/test/Transforms/GVN/pre-compare.ll
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@@ -1,6 +1,6 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
; RUN: opt -passes=gvn -S < %s | FileCheck --check-prefixes=CHECK,MDEP %s
; RUN: opt -passes='gvn<memoryssa;no-memdep>' -S < %s | FileCheck --check-prefixes=CHECK,MSSA %s
; RUN: opt -passes='gvn<memoryssa>' -S < %s | FileCheck --check-prefixes=CHECK,MSSA %s

; C source:
;
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2 changes: 1 addition & 1 deletion llvm/test/Transforms/GVN/readattrs.ll
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@@ -1,6 +1,6 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
; RUN: opt -passes=gvn -S -o - < %s | FileCheck --check-prefixes=CHECK,MDEP %s
; RUN: opt -passes='gvn<memoryssa;no-memdep>' -S -o - < %s | FileCheck --check-prefixes=CHECK,MSSA %s
; RUN: opt -passes='gvn<memoryssa>' -S -o - < %s | FileCheck --check-prefixes=CHECK,MSSA %s

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"
target triple = "x86_64-unknown-linux-gnu"
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2 changes: 1 addition & 1 deletion llvm/test/Transforms/GVN/setjmp.ll
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@@ -1,6 +1,6 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
; RUN: opt -S -passes=gvn < %s | FileCheck --check-prefixes=CHECK,MDEP %s
; RUN: opt -S -passes='gvn<memoryssa;no-memdep>' -verify-analysis-invalidation < %s | FileCheck --check-prefixes=CHECK,MSSA %s
; RUN: opt -S -passes='gvn<memoryssa>' -verify-analysis-invalidation < %s | FileCheck --check-prefixes=CHECK,MSSA %s
declare i32 @setjmp() returns_twice
declare void @longjmp()
declare ptr @malloc(i64)
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2 changes: 1 addition & 1 deletion llvm/test/Transforms/GVN/tbaa.ll
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@@ -1,6 +1,6 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
; RUN: opt -passes=gvn -S < %s | FileCheck --check-prefixes=CHECK,MDEP %s
; RUN: opt -passes='gvn<memoryssa;no-memdep>' -S < %s | FileCheck --check-prefixes=CHECK,MSSA %s
; RUN: opt -passes='gvn<memoryssa>' -S < %s | FileCheck --check-prefixes=CHECK,MSSA %s

define i32 @test1(ptr %p, ptr %q) {
; MDEP-LABEL: define i32 @test1(
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2 changes: 1 addition & 1 deletion llvm/test/Transforms/GVN/vscale.ll
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@@ -1,6 +1,6 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S < %s -passes=gvn,dce | FileCheck --check-prefixes=CHECK,MDEP %s
; RUN: opt -S < %s -passes='gvn<memoryssa;no-memdep>',dce | FileCheck --check-prefixes=CHECK,MSSA %s
; RUN: opt -S < %s -passes='gvn<memoryssa>',dce | FileCheck --check-prefixes=CHECK,MSSA %s

; Analyze Load from clobbering Load.

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