forked from OSchip/llvm-project
69 lines
3.0 KiB
LLVM
69 lines
3.0 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S -sroa < %s | FileCheck %s
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%st.half = type { half }
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; Allow speculateSelectInstLoads to fold load and select
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; even if there is an intervening bitcast.
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define <2 x i16> @test_load_bitcast_select(i1 %cond1, i1 %cond2) {
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; CHECK-LABEL: @test_load_bitcast_select(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[TMP0:%.*]] = bitcast half 0xHFFFF to i16
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; CHECK-NEXT: [[TMP1:%.*]] = bitcast half 0xH0000 to i16
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; CHECK-NEXT: [[LD1_SROA_SPECULATED:%.*]] = select i1 [[COND1:%.*]], i16 [[TMP0]], i16 [[TMP1]]
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; CHECK-NEXT: [[V1:%.*]] = insertelement <2 x i16> undef, i16 [[LD1_SROA_SPECULATED]], i32 0
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; CHECK-NEXT: [[TMP2:%.*]] = bitcast half 0xHFFFF to i16
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; CHECK-NEXT: [[TMP3:%.*]] = bitcast half 0xH0000 to i16
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; CHECK-NEXT: [[LD2_SROA_SPECULATED:%.*]] = select i1 [[COND2:%.*]], i16 [[TMP2]], i16 [[TMP3]]
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; CHECK-NEXT: [[V2:%.*]] = insertelement <2 x i16> [[V1]], i16 [[LD2_SROA_SPECULATED]], i32 1
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; CHECK-NEXT: ret <2 x i16> [[V2]]
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;
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entry:
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%true = alloca half, align 2
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%false = alloca half, align 2
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store half 0xHFFFF, half* %true, align 2
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store half 0xH0000, half* %false, align 2
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%false.cast = bitcast half* %false to %st.half*
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%true.cast = bitcast half* %true to %st.half*
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%sel1 = select i1 %cond1, %st.half* %true.cast, %st.half* %false.cast
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%cast1 = bitcast %st.half* %sel1 to i16*
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%ld1 = load i16, i16* %cast1, align 2
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%v1 = insertelement <2 x i16> undef, i16 %ld1, i32 0
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%sel2 = select i1 %cond2, %st.half* %true.cast, %st.half* %false.cast
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%cast2 = bitcast %st.half* %sel2 to i16*
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%ld2 = load i16, i16* %cast2, align 2
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%v2 = insertelement <2 x i16> %v1, i16 %ld2, i32 1
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ret <2 x i16> %v2
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}
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%st.args = type { i32, i32* }
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; A bitcasted load and a direct load of select.
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define void @test_multiple_loads_select(i1 %cmp){
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; CHECK-LABEL: @test_multiple_loads_select(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[TMP0:%.*]] = bitcast i32* undef to i8*
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; CHECK-NEXT: [[TMP1:%.*]] = bitcast i32* undef to i8*
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; CHECK-NEXT: [[ADDR_I8_SROA_SPECULATED:%.*]] = select i1 [[CMP:%.*]], i8* [[TMP0]], i8* [[TMP1]]
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; CHECK-NEXT: call void @foo_i8(i8* [[ADDR_I8_SROA_SPECULATED]])
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; CHECK-NEXT: [[ADDR_I32_SROA_SPECULATED:%.*]] = select i1 [[CMP]], i32* undef, i32* undef
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; CHECK-NEXT: call void @foo_i32(i32* [[ADDR_I32_SROA_SPECULATED]])
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; CHECK-NEXT: ret void
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;
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entry:
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%args = alloca [2 x %st.args], align 16
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%arr0 = getelementptr inbounds [2 x %st.args], [2 x %st.args]* %args, i64 0, i64 0
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%arr1 = getelementptr inbounds [2 x %st.args], [2 x %st.args]* %args, i64 0, i64 1
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%sel = select i1 %cmp, %st.args* %arr1, %st.args* %arr0
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%addr = getelementptr inbounds %st.args, %st.args* %sel, i64 0, i32 1
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%bcast.i8 = bitcast i32** %addr to i8**
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%addr.i8 = load i8*, i8** %bcast.i8, align 8
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call void @foo_i8(i8* %addr.i8)
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%addr.i32 = load i32*, i32** %addr, align 8
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call void @foo_i32 (i32* %addr.i32)
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ret void
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}
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declare void @foo_i8(i8*)
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declare void @foo_i32(i32*)
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