1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py 2; RUN: llc -o - %s -mtriple aarch64-- -mattr +slow-misaligned-128store | FileCheck %s 3; Checks for a bug where selection dag store merging would construct wrong 4; indices when extracting values from vectors, resulting in an invalid 5; lane duplication in this case. 6; The only way I could trigger stores with mismatching types getting merged was 7; via the aarch64 slow-misaligned-128store code splitting stores earlier. 8 9; aarch64 feature slow-misaligned-128store splits the following store. 10; store merging immediately merges it back together (but used to get the 11; merging wrong), this is the only way I was able to reproduce the bug... 12 13define void @func(ptr %sptr, ptr %dptr) { 14; CHECK-LABEL: func: 15; CHECK: // %bb.0: 16; CHECK-NEXT: ldr q0, [x0] 17; CHECK-NEXT: str q0, [x1] 18; CHECK-NEXT: ret 19 %load = load <2 x double>, ptr %sptr, align 8 20 store <2 x double> %load, ptr %dptr, align 4 21 ret void 22} 23