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