forked from OSchip/llvm-project
66 lines
2.1 KiB
LLVM
66 lines
2.1 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: addi sp, sp, -16
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; CHECK-NEXT: sd ra, 8(sp) # 8-byte Folded Spill
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; CHECK-NEXT: lui a0, %hi(global)
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; CHECK-NEXT: lbu a0, %lo(global)(a0)
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; CHECK-NEXT: lui a1, %hi(global.2)
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; CHECK-NEXT: lbu a1, %lo(global.2)(a1)
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; CHECK-NEXT: addi a0, a0, 1
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; CHECK-NEXT: lui a2, %hi(global.1)
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; CHECK-NEXT: sw a0, %lo(global.1)(a2)
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; CHECK-NEXT: mul a0, a0, a1
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; CHECK-NEXT: lui a1, 16
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; CHECK-NEXT: addiw a1, a1, -1
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; CHECK-NEXT: and a1, a0, a1
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; CHECK-NEXT: lui a2, 13
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; CHECK-NEXT: addiw a2, a2, -819
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; CHECK-NEXT: mul a1, a1, a2
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; CHECK-NEXT: srli a1, a1, 18
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; CHECK-NEXT: lui a2, %hi(global.3)
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; CHECK-NEXT: addi a3, zero, 5
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; CHECK-NEXT: sw a1, %lo(global.3)(a2)
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; CHECK-NEXT: bltu a0, a3, .LBB0_2
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; CHECK-NEXT: # %bb.1: # %bb10
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; CHECK-NEXT: call quux@plt
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; CHECK-NEXT: .LBB0_2: # %bb12
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; CHECK-NEXT: mv a0, zero
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; CHECK-NEXT: ld ra, 8(sp) # 8-byte Folded Reload
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; CHECK-NEXT: addi sp, sp, 16
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; CHECK-NEXT: ret
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bb:
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%tmp = load i8, i8* @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, i32* @global.1, align 4
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%tmp3 = load i8, i8* @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, i32* @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 bitcast (i32 (...)* @quux to i32 ()*)()
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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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