1 ; RUN: llc < %s | FileCheck %s
3 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
4 target triple = "x86_64-unknown-unknown"
6 define void @PR22524({ float, float }* %arg) {
7 ; Check that we can materialize the zero constants we store in two places here,
8 ; and at least form a legal store of the floating point value at the end.
9 ; The DAG combiner at one point contained bugs that given enough permutations
10 ; would incorrectly form an illegal operation for the last of these stores when
11 ; it folded it to a zero too late to legalize the zero store operation. If this
12 ; ever starts forming a zero store instead of movss, the test case has stopped
15 ; CHECK-LABEL: PR22524:
17 %0 = getelementptr inbounds { float, float }* %arg, i32 0, i32 1
18 store float 0.000000e+00, float* %0, align 4
19 ; CHECK: movl $0, 4(%rdi)
21 %1 = getelementptr inbounds { float, float }* %arg, i64 0, i32 0
22 %2 = bitcast float* %1 to i64*
23 %3 = load i64* %2, align 8
24 %4 = trunc i64 %3 to i32
26 %6 = trunc i64 %5 to i32
27 %7 = bitcast i32 %6 to float
28 %8 = fmul float %7, 0.000000e+00
29 %9 = bitcast float* %1 to i32*
30 store i32 %6, i32* %9, align 4
31 ; CHECK: movl $0, (%rdi)
32 store float %8, float* %0, align 4
33 ; CHECK: movss %{{.*}}, 4(%rdi)