1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 2 2; RUN: opt -S -passes=instcombine < %s | FileCheck %s 3 4; Instcombine should preserve metadata and alignment while 5; folding a bitcast into a store. 6 7target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64" 8 9%struct.A = type { ptr } 10 11@G = external constant [5 x ptr] 12 13define void @foo(i32 %x, ptr %p) nounwind { 14; CHECK-LABEL: define void @foo 15; CHECK-SAME: (i32 [[X:%.*]], ptr [[P:%.*]]) #[[ATTR0:[0-9]+]] { 16; CHECK-NEXT: entry: 17; CHECK-NEXT: store i32 [[X]], ptr [[P]], align 16, !noalias !0, !llvm.access.group [[ACC_GRP3:![0-9]+]] 18; CHECK-NEXT: ret void 19; 20entry: 21 %x.cast = bitcast i32 %x to float 22 store float %x.cast, ptr %p, align 16, !noalias !0, !llvm.access.group !3 23 ret void 24} 25 26; Check instcombine doesn't try and fold the following bitcast into the store. 27; This transformation would not be safe since we would need to use addrspacecast 28; and addrspacecast is not guaranteed to be a no-op cast. 29 30define void @bar(ptr addrspace(1) %a, ptr %b) nounwind { 31; CHECK-LABEL: define void @bar 32; CHECK-SAME: (ptr addrspace(1) [[A:%.*]], ptr [[B:%.*]]) #[[ATTR0]] { 33; CHECK-NEXT: entry: 34; CHECK-NEXT: store ptr addrspace(1) [[A]], ptr [[B]], align 8 35; CHECK-NEXT: ret void 36; 37entry: 38 store ptr addrspace(1) %a, ptr %b 39 ret void 40} 41 42; Check that we don't combine the bitcast into the store. This would create a 43; bitcast of the swifterror which is invalid. 44 45%swift.error = type opaque 46define void @swifterror_store(ptr %x, ptr swifterror %err) { 47; CHECK-LABEL: define void @swifterror_store 48; CHECK-SAME: (ptr [[X:%.*]], ptr swifterror [[ERR:%.*]]) { 49; CHECK-NEXT: entry: 50; CHECK-NEXT: store ptr [[X]], ptr [[ERR]], align 8 51; CHECK-NEXT: ret void 52; 53entry: 54 store ptr %x, ptr %err 55 ret void 56} 57 58define void @ppcf128_ones_store(ptr %dest) { 59; CHECK-LABEL: define void @ppcf128_ones_store 60; CHECK-SAME: (ptr [[DEST:%.*]]) { 61; CHECK-NEXT: entry: 62; CHECK-NEXT: store ppc_fp128 0xMFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF, ptr [[DEST]], align 16 63; CHECK-NEXT: ret void 64; 65entry: 66 %int = or i128 0, 340282366920938463463374607431768211455 ; 128 ones 67 %val = bitcast i128 %int to ppc_fp128 68 store ppc_fp128 %val, ptr %dest, align 16 69 ret void 70} 71 72!0 = !{!1} 73!1 = !{!1, !2} 74!2 = !{!2} 75!3 = !{} 76