derek.holloway
7502bf64a4
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83 lines
2.3 KiB
LLVM
83 lines
2.3 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -passes=sccp -S | FileCheck %s
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define void @shift_undef_64(ptr %p) {
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; CHECK-LABEL: @shift_undef_64(
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; CHECK-NEXT: store i64 0, ptr [[P:%.*]], align 4
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; CHECK-NEXT: store i64 -1, ptr [[P]], align 4
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; CHECK-NEXT: [[R3:%.*]] = shl nuw nsw i64 -1, 4294967298
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; CHECK-NEXT: store i64 [[R3]], ptr [[P]], align 4
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; CHECK-NEXT: ret void
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;
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%r1 = lshr i64 -1, 4294967296 ; 2^32
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store i64 %r1, ptr %p
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%r2 = ashr i64 -1, 4294967297 ; 2^32 + 1
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store i64 %r2, ptr %p
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%r3 = shl i64 -1, 4294967298 ; 2^32 + 2
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store i64 %r3, ptr %p
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ret void
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}
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define void @shift_undef_65(ptr %p) {
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; CHECK-LABEL: @shift_undef_65(
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; CHECK-NEXT: store i65 0, ptr [[P:%.*]], align 4
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; CHECK-NEXT: store i65 0, ptr [[P]], align 4
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; CHECK-NEXT: [[R3:%.*]] = shl nuw nsw i65 1, -18446744073709551615
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; CHECK-NEXT: store i65 [[R3]], ptr [[P]], align 4
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; CHECK-NEXT: ret void
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;
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%r1 = lshr i65 2, 18446744073709551617
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store i65 %r1, ptr %p
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%r2 = ashr i65 4, 18446744073709551617
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store i65 %r2, ptr %p
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%r3 = shl i65 1, 18446744073709551617
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store i65 %r3, ptr %p
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ret void
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}
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define void @shift_undef_256(ptr %p) {
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; CHECK-LABEL: @shift_undef_256(
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; CHECK-NEXT: store i256 0, ptr [[P:%.*]], align 4
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; CHECK-NEXT: store i256 0, ptr [[P]], align 4
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; CHECK-NEXT: [[R3:%.*]] = shl nuw nsw i256 1, 18446744073709551619
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; CHECK-NEXT: store i256 [[R3]], ptr [[P]], align 4
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; CHECK-NEXT: ret void
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;
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%r1 = lshr i256 2, 18446744073709551617
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store i256 %r1, ptr %p
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%r2 = ashr i256 4, 18446744073709551618
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store i256 %r2, ptr %p
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%r3 = shl i256 1, 18446744073709551619
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store i256 %r3, ptr %p
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ret void
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}
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define void @shift_undef_511(ptr %p) {
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; CHECK-LABEL: @shift_undef_511(
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; CHECK-NEXT: store i511 0, ptr [[P:%.*]], align 4
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; CHECK-NEXT: store i511 -1, ptr [[P]], align 4
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; CHECK-NEXT: [[R3:%.*]] = shl nuw nsw i511 -3, 1208925819614629174706180
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; CHECK-NEXT: store i511 [[R3]], ptr [[P]], align 4
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; CHECK-NEXT: ret void
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;
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%r1 = lshr i511 -1, 1208925819614629174706276 ; 2^80 + 100
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store i511 %r1, ptr %p
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%r2 = ashr i511 -2, 1208925819614629174706200
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store i511 %r2, ptr %p
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%r3 = shl i511 -3, 1208925819614629174706180
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store i511 %r3, ptr %p
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ret void
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}
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