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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
; RUN: llc -mtriple=riscv32 -verify-machineinstrs < %s | FileCheck %s
; RUN: llc -mtriple=riscv64 -verify-machineinstrs < %s | FileCheck %s
@x = global [6 x i32] [i32 0, i32 1, i32 2, i32 3, i32 4, i32 5], align 4
@check = global [6 x i32] [i32 0, i32 1, i32 2, i32 3, i32 4, i32 5], align 4
; This test case checks whether the base address of an array is repeatedly
; rematerialised within a unrolled loop.
define signext i32 @unroll_loop_cse() {
; CHECK-LABEL: unroll_loop_cse:
; CHECK: # %bb.0:
; CHECK-NEXT: lui a1, %hi(x)
; CHECK-NEXT: lw a3, %lo(x)(a1)
; CHECK-NEXT: lui a2, %hi(check)
; CHECK-NEXT: lw a4, %lo(check)(a2)
; CHECK-NEXT: li a0, 1
; CHECK-NEXT: bne a3, a4, .LBB0_6
; CHECK-NEXT: # %bb.1:
; CHECK-NEXT: addi a1, a1, %lo(x)
; CHECK-NEXT: lw a3, 4(a1)
; CHECK-NEXT: addi a2, a2, %lo(check)
; CHECK-NEXT: lw a4, 4(a2)
; CHECK-NEXT: bne a3, a4, .LBB0_6
; CHECK-NEXT: # %bb.2:
; CHECK-NEXT: lw a3, 8(a1)
; CHECK-NEXT: lw a4, 8(a2)
; CHECK-NEXT: bne a3, a4, .LBB0_6
; CHECK-NEXT: # %bb.3:
; CHECK-NEXT: lw a3, 12(a1)
; CHECK-NEXT: lw a4, 12(a2)
; CHECK-NEXT: bne a3, a4, .LBB0_6
; CHECK-NEXT: # %bb.4:
; CHECK-NEXT: lw a3, 16(a1)
; CHECK-NEXT: lw a4, 16(a2)
; CHECK-NEXT: bne a3, a4, .LBB0_6
; CHECK-NEXT: # %bb.5:
; CHECK-NEXT: lw a0, 20(a1)
; CHECK-NEXT: lw a1, 20(a2)
; CHECK-NEXT: xor a0, a0, a1
; CHECK-NEXT: snez a0, a0
; CHECK-NEXT: .LBB0_6:
; CHECK-NEXT: ret
%1 = load i32, i32* getelementptr inbounds ([6 x i32], [6 x i32]* @x, i64 0, i64 0), align 4
%2 = load i32, i32* getelementptr inbounds ([6 x i32], [6 x i32]* @check, i64 0, i64 0), align 4
%3 = icmp eq i32 %1, %2
br i1 %3, label %4, label %25
4:
%5 = load i32, i32* getelementptr inbounds ([6 x i32], [6 x i32]* @x, i64 0, i64 1), align 4
%6 = load i32, i32* getelementptr inbounds ([6 x i32], [6 x i32]* @check, i64 0, i64 1), align 4
%7 = icmp eq i32 %5, %6
br i1 %7, label %8, label %25
8:
%9 = load i32, i32* getelementptr inbounds ([6 x i32], [6 x i32]* @x, i64 0, i64 2), align 4
%10 = load i32, i32* getelementptr inbounds ([6 x i32], [6 x i32]* @check, i64 0, i64 2), align 4
%11 = icmp eq i32 %9, %10
br i1 %11, label %12, label %25
12:
%13 = load i32, i32* getelementptr inbounds ([6 x i32], [6 x i32]* @x, i64 0, i64 3), align 4
%14 = load i32, i32* getelementptr inbounds ([6 x i32], [6 x i32]* @check, i64 0, i64 3), align 4
%15 = icmp eq i32 %13, %14
br i1 %15, label %16, label %25
16:
%17 = load i32, i32* getelementptr inbounds ([6 x i32], [6 x i32]* @x, i64 0, i64 4), align 4
%18 = load i32, i32* getelementptr inbounds ([6 x i32], [6 x i32]* @check, i64 0, i64 4), align 4
%19 = icmp eq i32 %17, %18
br i1 %19, label %20, label %25
20:
%21 = load i32, i32* getelementptr inbounds ([6 x i32], [6 x i32]* @x, i64 0, i64 5), align 4
%22 = load i32, i32* getelementptr inbounds ([6 x i32], [6 x i32]* @check, i64 0, i64 5), align 4
%23 = icmp ne i32 %21, %22
%24 = zext i1 %23 to i32
br label %25
25:
%26 = phi i32 [ 1, %0 ], [ 1, %4 ], [ 1, %8 ], [ 1, %12 ], [ 1, %16 ], [ %24, %20 ]
ret i32 %26
}
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