75 lines
2.4 KiB
LLVM
75 lines
2.4 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 2
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; RUN: opt -S -passes=instcombine < %s | FileCheck %s
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; Instcombine should preserve metadata and alignment while
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; folding a bitcast into a store.
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target 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"
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%struct.A = type { ptr }
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@G = external constant [5 x ptr]
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define void @foo(i32 %x, ptr %p) nounwind {
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; CHECK-LABEL: define void @foo
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; CHECK-SAME: (i32 [[X:%.*]], ptr [[P:%.*]]) #[[ATTR0:[0-9]+]] {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: store i32 [[X]], ptr [[P]], align 16, !noalias !0, !llvm.access.group [[ACC_GRP3:![0-9]+]]
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; CHECK-NEXT: ret void
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;
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entry:
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%x.cast = bitcast i32 %x to float
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store float %x.cast, ptr %p, align 16, !noalias !0, !llvm.access.group !3
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ret void
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}
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; Check instcombine doesn't try and fold the following bitcast into the store.
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; This transformation would not be safe since we would need to use addrspacecast
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; and addrspacecast is not guaranteed to be a no-op cast.
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define void @bar(ptr addrspace(1) %a, ptr %b) nounwind {
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; CHECK-LABEL: define void @bar
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; CHECK-SAME: (ptr addrspace(1) [[A:%.*]], ptr [[B:%.*]]) #[[ATTR0]] {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: store ptr addrspace(1) [[A]], ptr [[B]], align 8
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; CHECK-NEXT: ret void
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;
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entry:
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store ptr addrspace(1) %a, ptr %b
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ret void
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}
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; Check that we don't combine the bitcast into the store. This would create a
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; bitcast of the swifterror which is invalid.
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%swift.error = type opaque
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define void @swifterror_store(ptr %x, ptr swifterror %err) {
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; CHECK-LABEL: define void @swifterror_store
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; CHECK-SAME: (ptr [[X:%.*]], ptr swifterror [[ERR:%.*]]) {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: store ptr [[X]], ptr [[ERR]], align 8
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; CHECK-NEXT: ret void
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;
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entry:
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store ptr %x, ptr %err
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ret void
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}
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define void @ppcf128_ones_store(ptr %dest) {
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; CHECK-LABEL: define void @ppcf128_ones_store
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; CHECK-SAME: (ptr [[DEST:%.*]]) {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: store ppc_fp128 0xMFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF, ptr [[DEST]], align 16
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; CHECK-NEXT: ret void
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;
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entry:
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%int = or i128 0, 340282366920938463463374607431768211455 ; 128 ones
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%val = bitcast i128 %int to ppc_fp128
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store ppc_fp128 %val, ptr %dest, align 16
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ret void
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}
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!0 = !{!1}
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!1 = !{!1, !2}
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!2 = !{!2}
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!3 = !{}
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