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