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llvm-mirror/test/CodeGen/PowerPC/vector-merge-store-fp-constants.ll
Matt Arsenault 70e6ce5a40 DAGCombiner: Replace store of FP constant after attemping store merges
If storing multiple FP constants, some subset of the stores
would be replaced with integers due to visit order, so
MergeConsecutiveStores would only partially merge
these.

llvm-svn: 248169
2015-09-21 15:59:46 +00:00

29 lines
1.1 KiB
LLVM

; RUN: llc -march=ppc64 -mtriple=ppc64-apple-darwin < %s | FileCheck %s
; CHECK-LABEL: {{^}}_merge_8_float_zero_stores:
; CHECK: li [[ZEROREG:r[0-9]+]], 0
; CHECK-DAG: std [[ZEROREG]], 0([[PTR:r[0-9]+]])
; CHECK-DAG: std [[ZEROREG]], 8([[PTR]])
; CHECK-DAG: std [[ZEROREG]], 16([[PTR]])
; CHECK-DAG: std [[ZEROREG]], 24([[PTR]])
; CHECK: blr
define void @merge_8_float_zero_stores(float* %ptr) {
%idx0 = getelementptr float, float* %ptr, i64 0
%idx1 = getelementptr float, float* %ptr, i64 1
%idx2 = getelementptr float, float* %ptr, i64 2
%idx3 = getelementptr float, float* %ptr, i64 3
%idx4 = getelementptr float, float* %ptr, i64 4
%idx5 = getelementptr float, float* %ptr, i64 5
%idx6 = getelementptr float, float* %ptr, i64 6
%idx7 = getelementptr float, float* %ptr, i64 7
store float 0.0, float* %idx0, align 4
store float 0.0, float* %idx1, align 4
store float 0.0, float* %idx2, align 4
store float 0.0, float* %idx3, align 4
store float 0.0, float* %idx4, align 4
store float 0.0, float* %idx5, align 4
store float 0.0, float* %idx6, align 4
store float 0.0, float* %idx7, align 4
ret void
}