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TheRock/compiler/amd-llvm/llvm/test/Transforms/LICM/hoist-nounwind.ll
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 6
; RUN: opt -aa-pipeline=basic-aa -passes='require<opt-remark-emit>,loop-mssa(licm)' -S %s | FileCheck %s
; RUN: opt -S -passes=licm -verify-memoryssa < %s | FileCheck %s
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
declare void @f() nounwind
; Don't hoist load past nounwind call.
define i32 @test1(ptr noalias nocapture readonly %a) nounwind uwtable {
; CHECK-LABEL: define i32 @test1(
; CHECK-SAME: ptr noalias readonly captures(none) [[A:%.*]]) #[[ATTR1:[0-9]+]] {
; CHECK-NEXT: [[ENTRY:.*]]:
; CHECK-NEXT: br label %[[FOR_BODY:.*]]
; CHECK: [[FOR_BODY]]:
; CHECK-NEXT: [[I_06:%.*]] = phi i32 [ 0, %[[ENTRY]] ], [ [[INC:%.*]], %[[FOR_BODY]] ]
; CHECK-NEXT: [[X_05:%.*]] = phi i32 [ 0, %[[ENTRY]] ], [ [[ADD:%.*]], %[[FOR_BODY]] ]
; CHECK-NEXT: tail call void @f() #[[ATTR0:[0-9]+]]
; CHECK-NEXT: [[I1:%.*]] = load i32, ptr [[A]], align 4
; CHECK-NEXT: [[ADD]] = add nsw i32 [[I1]], [[X_05]]
; CHECK-NEXT: [[INC]] = add nuw nsw i32 [[I_06]], 1
; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i32 [[INC]], 1000
; CHECK-NEXT: br i1 [[EXITCOND]], label %[[FOR_COND_CLEANUP:.*]], label %[[FOR_BODY]]
; CHECK: [[FOR_COND_CLEANUP]]:
; CHECK-NEXT: [[ADD_LCSSA:%.*]] = phi i32 [ [[ADD]], %[[FOR_BODY]] ]
; CHECK-NEXT: ret i32 [[ADD_LCSSA]]
;
entry:
br label %for.body
for.body:
%i.06 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
%x.05 = phi i32 [ 0, %entry ], [ %add, %for.body ]
tail call void @f() nounwind
%i1 = load i32, ptr %a, align 4
%add = add nsw i32 %i1, %x.05
%inc = add nuw nsw i32 %i.06, 1
%exitcond = icmp eq i32 %inc, 1000
br i1 %exitcond, label %for.cond.cleanup, label %for.body
for.cond.cleanup:
ret i32 %add
}
; Don't hoist division past nounwind call.
define i32 @test2(i32 %N, i32 %c) nounwind uwtable {
; CHECK-LABEL: define i32 @test2(
; CHECK-SAME: i32 [[N:%.*]], i32 [[C:%.*]]) #[[ATTR1]] {
; CHECK-NEXT: [[ENTRY:.*:]]
; CHECK-NEXT: [[CMP4:%.*]] = icmp sgt i32 [[N]], 0
; CHECK-NEXT: br i1 [[CMP4]], label %[[FOR_BODY_PREHEADER:.*]], label %[[FOR_COND_CLEANUP:.*]]
; CHECK: [[FOR_BODY_PREHEADER]]:
; CHECK-NEXT: br label %[[FOR_BODY:.*]]
; CHECK: [[FOR_BODY]]:
; CHECK-NEXT: [[I_05:%.*]] = phi i32 [ [[INC:%.*]], %[[FOR_BODY]] ], [ 0, %[[FOR_BODY_PREHEADER]] ]
; CHECK-NEXT: tail call void @f() #[[ATTR0]]
; CHECK-NEXT: [[DIV:%.*]] = sdiv i32 5, [[C]]
; CHECK-NEXT: [[ADD:%.*]] = add i32 [[I_05]], 1
; CHECK-NEXT: [[INC]] = add i32 [[ADD]], [[DIV]]
; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[INC]], [[N]]
; CHECK-NEXT: br i1 [[CMP]], label %[[FOR_BODY]], label %[[FOR_COND_CLEANUP_LOOPEXIT:.*]]
; CHECK: [[FOR_COND_CLEANUP_LOOPEXIT]]:
; CHECK-NEXT: br label %[[FOR_COND_CLEANUP]]
; CHECK: [[FOR_COND_CLEANUP]]:
; CHECK-NEXT: ret i32 0
;
entry:
%cmp4 = icmp sgt i32 %N, 0
br i1 %cmp4, label %for.body, label %for.cond.cleanup
for.body:
%i.05 = phi i32 [ %inc, %for.body ], [ 0, %entry ]
tail call void @f() nounwind
%div = sdiv i32 5, %c
%add = add i32 %i.05, 1
%inc = add i32 %add, %div
%cmp = icmp slt i32 %inc, %N
br i1 %cmp, label %for.body, label %for.cond.cleanup
for.cond.cleanup:
ret i32 0
}
; Do not hoist a non-volatile load past volatile load, because it may trap.
define i32 @test3(ptr noalias nocapture readonly %a, ptr %v) nounwind uwtable {
; CHECK-LABEL: define i32 @test3(
; CHECK-SAME: ptr noalias readonly captures(none) [[A:%.*]], ptr [[V:%.*]]) #[[ATTR1]] {
; CHECK-NEXT: [[ENTRY:.*]]:
; CHECK-NEXT: br label %[[FOR_BODY:.*]]
; CHECK: [[FOR_BODY]]:
; CHECK-NEXT: [[I_06:%.*]] = phi i32 [ 0, %[[ENTRY]] ], [ [[INC:%.*]], %[[FOR_BODY]] ]
; CHECK-NEXT: [[X_05:%.*]] = phi i32 [ 0, %[[ENTRY]] ], [ [[ADD:%.*]], %[[FOR_BODY]] ]
; CHECK-NEXT: [[XXX:%.*]] = load volatile i32, ptr [[V]], align 4
; CHECK-NEXT: [[I1:%.*]] = load i32, ptr [[A]], align 4
; CHECK-NEXT: [[ADD]] = add nsw i32 [[I1]], [[X_05]]
; CHECK-NEXT: [[INC]] = add nuw nsw i32 [[I_06]], 1
; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i32 [[INC]], 1000
; CHECK-NEXT: br i1 [[EXITCOND]], label %[[FOR_COND_CLEANUP:.*]], label %[[FOR_BODY]]
; CHECK: [[FOR_COND_CLEANUP]]:
; CHECK-NEXT: [[ADD_LCSSA:%.*]] = phi i32 [ [[ADD]], %[[FOR_BODY]] ]
; CHECK-NEXT: ret i32 [[ADD_LCSSA]]
;
entry:
br label %for.body
for.body:
%i.06 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
%x.05 = phi i32 [ 0, %entry ], [ %add, %for.body ]
%xxx = load volatile i32, ptr %v, align 4
%i1 = load i32, ptr %a, align 4
%add = add nsw i32 %i1, %x.05
%inc = add nuw nsw i32 %i.06, 1
%exitcond = icmp eq i32 %inc, 1000
br i1 %exitcond, label %for.cond.cleanup, label %for.body
for.cond.cleanup:
ret i32 %add
}
; Don't a volatile load past volatile load.
define i32 @test4(ptr noalias nocapture readonly %a, ptr %v) nounwind uwtable {
; CHECK-LABEL: define i32 @test4(
; CHECK-SAME: ptr noalias readonly captures(none) [[A:%.*]], ptr [[V:%.*]]) #[[ATTR1]] {
; CHECK-NEXT: [[ENTRY:.*]]:
; CHECK-NEXT: br label %[[FOR_BODY:.*]]
; CHECK: [[FOR_BODY]]:
; CHECK-NEXT: [[I_06:%.*]] = phi i32 [ 0, %[[ENTRY]] ], [ [[INC:%.*]], %[[FOR_BODY]] ]
; CHECK-NEXT: [[X_05:%.*]] = phi i32 [ 0, %[[ENTRY]] ], [ [[ADD:%.*]], %[[FOR_BODY]] ]
; CHECK-NEXT: [[XXX:%.*]] = load volatile i32, ptr [[V]], align 4
; CHECK-NEXT: [[I1:%.*]] = load volatile i32, ptr [[A]], align 4
; CHECK-NEXT: [[ADD]] = add nsw i32 [[I1]], [[X_05]]
; CHECK-NEXT: [[INC]] = add nuw nsw i32 [[I_06]], 1
; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i32 [[INC]], 1000
; CHECK-NEXT: br i1 [[EXITCOND]], label %[[FOR_COND_CLEANUP:.*]], label %[[FOR_BODY]]
; CHECK: [[FOR_COND_CLEANUP]]:
; CHECK-NEXT: [[ADD_LCSSA:%.*]] = phi i32 [ [[ADD]], %[[FOR_BODY]] ]
; CHECK-NEXT: ret i32 [[ADD_LCSSA]]
;
entry:
br label %for.body
for.body:
%i.06 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
%x.05 = phi i32 [ 0, %entry ], [ %add, %for.body ]
%xxx = load volatile i32, ptr %v, align 4
%i1 = load volatile i32, ptr %a, align 4
%add = add nsw i32 %i1, %x.05
%inc = add nuw nsw i32 %i.06, 1
%exitcond = icmp eq i32 %inc, 1000
br i1 %exitcond, label %for.cond.cleanup, label %for.body
for.cond.cleanup:
ret i32 %add
}
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