derek.holloway
7502bf64a4
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60 lines
1.8 KiB
LLVM
60 lines
1.8 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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;RUN: llc < %s -mtriple=riscv64-unknown-linux-gnu -mattr=+m | FileCheck %s
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; This test used to cause an infinite loop.
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@global = global i8 0, align 1
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@global.1 = global i32 0, align 4
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@global.2 = global i8 0, align 1
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@global.3 = global i32 0, align 4
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define signext i32 @wobble() nounwind {
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; CHECK-LABEL: wobble:
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; CHECK: # %bb.0: # %bb
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; CHECK-NEXT: lui a0, %hi(global)
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; CHECK-NEXT: lui a1, %hi(global.1)
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; CHECK-NEXT: lbu a0, %lo(global)(a0)
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; CHECK-NEXT: lui a2, %hi(global.2)
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; CHECK-NEXT: lui a3, 52429
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; CHECK-NEXT: lbu a2, %lo(global.2)(a2)
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; CHECK-NEXT: addi a0, a0, 1
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; CHECK-NEXT: sw a0, %lo(global.1)(a1)
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; CHECK-NEXT: lui a1, %hi(global.3)
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; CHECK-NEXT: slli a3, a3, 4
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; CHECK-NEXT: mul a0, a0, a2
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; CHECK-NEXT: slli a2, a0, 48
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; CHECK-NEXT: mulhu a2, a2, a3
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; CHECK-NEXT: srli a2, a2, 18
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; CHECK-NEXT: li a3, 5
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; CHECK-NEXT: sw a2, %lo(global.3)(a1)
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; CHECK-NEXT: bgeu a0, a3, .LBB0_2
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; CHECK-NEXT: # %bb.1: # %bb12
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; CHECK-NEXT: li a0, 0
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; CHECK-NEXT: ret
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; CHECK-NEXT: .LBB0_2: # %bb10
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; CHECK-NEXT: tail quux
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bb:
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%tmp = load i8, ptr @global, align 1
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%tmp1 = zext i8 %tmp to i32
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%tmp2 = add nuw nsw i32 %tmp1, 1
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store i32 %tmp2, ptr @global.1, align 4
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%tmp3 = load i8, ptr @global.2, align 1
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%tmp4 = zext i8 %tmp3 to i32
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%tmp5 = mul nuw nsw i32 %tmp2, %tmp4
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%tmp6 = trunc i32 %tmp5 to i16
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%tmp7 = udiv i16 %tmp6, 5
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%tmp8 = zext i16 %tmp7 to i32
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store i32 %tmp8, ptr @global.3, align 4
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%tmp9 = icmp ult i32 %tmp5, 5
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br i1 %tmp9, label %bb12, label %bb10
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bb10: ; preds = %bb
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%tmp11 = tail call signext i32 @quux()
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br label %bb12
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bb12: ; preds = %bb10, %bb
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ret i32 undef
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}
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declare signext i32 @quux(...)
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