; 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 }