1 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2 ; RUN: llc < %s | FileCheck %s
4 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
5 target triple = "x86_64-unknown-unknown"
7 define void @PR22524({ float, float }* %arg) {
8 ; Check that we can materialize the zero constants we store in two places here,
9 ; and at least form a legal store of the floating point value at the end.
10 ; The DAG combiner at one point contained bugs that given enough permutations
11 ; would incorrectly form an illegal operation for the last of these stores when
12 ; it folded it to a zero too late to legalize the zero store operation. If this
13 ; ever starts forming a zero store instead of movss, the test case has stopped
16 ; CHECK-LABEL: PR22524:
17 ; CHECK: # BB#0: # %entry
18 ; CHECK-NEXT: movl $0, 4(%rdi)
19 ; CHECK-NEXT: xorl %eax, %eax
20 ; CHECK-NEXT: movd %eax, %xmm0
21 ; CHECK-NEXT: xorps %xmm1, %xmm1
22 ; CHECK-NEXT: mulss %xmm0, %xmm1
23 ; CHECK-NEXT: movl $0, (%rdi)
24 ; CHECK-NEXT: movss %xmm1, 4(%rdi)
27 %0 = getelementptr inbounds { float, float }, { float, float }* %arg, i32 0, i32 1
28 store float 0.000000e+00, float* %0, align 4
29 %1 = getelementptr inbounds { float, float }, { float, float }* %arg, i64 0, i32 0
30 %2 = bitcast float* %1 to i64*
31 %3 = load i64, i64* %2, align 8
32 %4 = trunc i64 %3 to i32
34 %6 = trunc i64 %5 to i32
35 %7 = bitcast i32 %6 to float
36 %8 = fmul float %7, 0.000000e+00
37 %9 = bitcast float* %1 to i32*
38 store i32 %6, i32* %9, align 4
39 store float %8, float* %0, align 4