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TheRock/compiler/amd-llvm/llvm/test/Transforms/PhaseOrdering/memset-tail.ll
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derek.holloway 7502bf64a4
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

34 lines
1.1 KiB
LLVM

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -passes='default<O2>' -S < %s | FileCheck %s
define void @PR47852(ptr noundef %d, i32 noundef %c) {
; CHECK-LABEL: @PR47852(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[CMP_NOT1:%.*]] = icmp eq i32 [[C:%.*]], 0
; CHECK-NEXT: br i1 [[CMP_NOT1]], label [[WHILE_END:%.*]], label [[WHILE_BODY_PREHEADER:%.*]]
; CHECK: while.body.preheader:
; CHECK-NEXT: [[TMP0:%.*]] = zext i32 [[C]] to i64
; CHECK-NEXT: tail call void @llvm.memset.p0.i64(ptr align 1 [[D:%.*]], i8 0, i64 [[TMP0]], i1 false)
; CHECK-NEXT: br label [[WHILE_END]]
; CHECK: while.end:
; CHECK-NEXT: ret void
;
entry:
br label %while.cond
while.cond:
%c.addr.0 = phi i32 [ %c, %entry ], [ %dec, %while.body ]
%d.addr.0 = phi ptr [ %d, %entry ], [ %incdec.ptr, %while.body ]
%dec = add i32 %c.addr.0, -1
%cmp = icmp ugt i32 %c.addr.0, 0
br i1 %cmp, label %while.body, label %while.end
while.body:
%incdec.ptr = getelementptr inbounds i8, ptr %d.addr.0, i32 1
store i8 0, ptr %d.addr.0, align 1
br label %while.cond
while.end:
ret void
}