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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 3
; RUN: llc < %s -mtriple=x86_64-pc-linux-gnu | FileCheck %s
; Correctly tracking COPY instructions in peephole should not crash compiler.
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture)
define void @foo(ptr %p1, ptr %p2, ptr %p3, ptr %p4) {
; CHECK-LABEL: foo:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: movq %rcx, %rax
; CHECK-NEXT: movl $5, -{{[0-9]+}}(%rsp)
; CHECK-NEXT: movl $5, %r8d
; CHECK-NEXT: xorl %ecx, %ecx
; CHECK-NEXT: cmpl $0, (%rdi)
; CHECK-NEXT: setle %cl
; CHECK-NEXT: movl (%rax), %eax
; CHECK-NEXT: shll %cl, %eax
; CHECK-NEXT: movl %r8d, (%rdx)
; CHECK-NEXT: .p2align 4, 0x90
; CHECK-NEXT: .LBB0_1: # %loop2.header
; CHECK-NEXT: # =>This Inner Loop Header: Depth=1
; CHECK-NEXT: movl $5, %edi
; CHECK-NEXT: orl %eax, %edi
; CHECK-NEXT: je .LBB0_1
; CHECK-NEXT: # %bb.2: # %exit
; CHECK-NEXT: movl %r8d, (%rdx)
; CHECK-NEXT: movl %ecx, (%rsi)
; CHECK-NEXT: retq
entry:
%q = alloca i32, align 4
%r = alloca i32, align 4
store i32 5, ptr %q, align 4
call void @llvm.lifetime.start.p0(i64 4, ptr %r)
%vq1 = load i32, ptr %q, align 4
%vb = load i32, ptr %p1, align 4
%cmp3 = icmp slt i32 %vb, 1
%conv4 = zext i1 %cmp3 to i32
%va = load i32, ptr %p4, align 4
%shl5 = shl i32 %va, %conv4
%vq2 = load i32, ptr %q, align 4
%cmp = icmp slt i32 %vb, 1
%conv = zext i1 %cmp to i32
%shl = shl i32 %va, %conv
%vq3 = load i32, ptr %q, align 4
%cmp.us = icmp slt i32 %vb, 1
%conv.us = zext i1 %cmp.us to i32
%shl.us = shl i32 %va, %conv.us
br label %loop2.preheader
loop2.preheader:
store i32 %vq1, ptr %p3, align 4
br label %loop2.header
loop2.header:
%cond1 = icmp eq i32 %vq3, 0
br i1 %cond1, label %loop2.body, label %exit
loop2.body:
%cond2 = icmp eq i32 %shl.us, 0
br i1 %cond2, label %loop2.header, label %exit
exit:
store i32 %vq2, ptr %p3, align 4
store i32 %conv.us, ptr %p2, align 4
ret void
}
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