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fda3bc797a
Unlike SDag, we use a separate G_GEP instruction (much simplified, only taking a single byte offset) to preserve the pointer type information through selection. llvm-svn: 281205
86 lines
3.0 KiB
LLVM
86 lines
3.0 KiB
LLVM
; RUN: llc -mtriple=aarch64-linux-gnu -O0 -global-isel -stop-after=irtranslator -o - %s | FileCheck %s
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%type = type [4 x {i8, i32}]
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define %type* @first_offset_const(%type* %addr) {
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; CHECK-LABEL: name: first_offset_const
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; CHECK: [[BASE:%[0-9]+]](p0) = COPY %x0
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; CHECK: [[OFFSET:%[0-9]+]](s64) = G_CONSTANT 32
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; CHECK: [[RES:%[0-9]+]](p0) = G_GEP [[BASE]], [[OFFSET]](s64)
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; CHECK: %x0 = COPY [[RES]](p0)
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%res = getelementptr %type, %type* %addr, i32 1
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ret %type* %res
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}
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define %type* @first_offset_trivial(%type* %addr) {
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; CHECK-LABEL: name: first_offset_trivial
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; CHECK: [[BASE:%[0-9]+]](p0) = COPY %x0
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; CHECK: [[TRIVIAL:%[0-9]+]](p0) = COPY [[BASE]](p0)
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; CHECK: %x0 = COPY [[TRIVIAL]](p0)
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%res = getelementptr %type, %type* %addr, i32 0
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ret %type* %res
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}
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define %type* @first_offset_variable(%type* %addr, i64 %idx) {
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; CHECK-LABEL: name: first_offset_variable
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; CHECK: [[BASE:%[0-9]+]](p0) = COPY %x0
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; CHECK: [[IDX:%[0-9]+]](s64) = COPY %x1
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; CHECK: [[SIZE:%[0-9]+]](s64) = G_CONSTANT 32
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; CHECK: [[OFFSET:%[0-9]+]](s64) = G_MUL [[SIZE]], [[IDX]]
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; CHECK: [[STEP0:%[0-9]+]](p0) = G_GEP [[BASE]], [[OFFSET]](s64)
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; CHECK: [[RES:%[0-9]+]](p0) = COPY [[STEP0]](p0)
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; CHECK: %x0 = COPY [[RES]](p0)
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%res = getelementptr %type, %type* %addr, i64 %idx
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ret %type* %res
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}
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define %type* @first_offset_ext(%type* %addr, i32 %idx) {
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; CHECK-LABEL: name: first_offset_ext
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; CHECK: [[BASE:%[0-9]+]](p0) = COPY %x0
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; CHECK: [[IDX32:%[0-9]+]](s32) = COPY %w1
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; CHECK: [[SIZE:%[0-9]+]](s64) = G_CONSTANT 32
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; CHECK: [[IDX64:%[0-9]+]](s64) = G_SEXT [[IDX32]](s32)
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; CHECK: [[OFFSET:%[0-9]+]](s64) = G_MUL [[SIZE]], [[IDX64]]
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; CHECK: [[STEP0:%[0-9]+]](p0) = G_GEP [[BASE]], [[OFFSET]](s64)
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; CHECK: [[RES:%[0-9]+]](p0) = COPY [[STEP0]](p0)
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; CHECK: %x0 = COPY [[RES]](p0)
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%res = getelementptr %type, %type* %addr, i32 %idx
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ret %type* %res
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}
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%type1 = type [4 x [4 x i32]]
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define i32* @const_then_var(%type1* %addr, i64 %idx) {
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; CHECK-LABEL: name: const_then_var
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; CHECK: [[BASE:%[0-9]+]](p0) = COPY %x0
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; CHECK: [[IDX:%[0-9]+]](s64) = COPY %x1
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; CHECK: [[OFFSET1:%[0-9]+]](s64) = G_CONSTANT 272
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; CHECK: [[BASE1:%[0-9]+]](p0) = G_GEP [[BASE]], [[OFFSET1]](s64)
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; CHECK: [[SIZE:%[0-9]+]](s64) = G_CONSTANT 4
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; CHECK: [[OFFSET2:%[0-9]+]](s64) = G_MUL [[SIZE]], [[IDX]]
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; CHECK: [[BASE2:%[0-9]+]](p0) = G_GEP [[BASE1]], [[OFFSET2]](s64)
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; CHECK: [[RES:%[0-9]+]](p0) = COPY [[BASE2]](p0)
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; CHECK: %x0 = COPY [[RES]](p0)
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%res = getelementptr %type1, %type1* %addr, i32 4, i32 1, i64 %idx
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ret i32* %res
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}
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define i32* @var_then_const(%type1* %addr, i64 %idx) {
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; CHECK-LABEL: name: var_then_const
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; CHECK: [[BASE:%[0-9]+]](p0) = COPY %x0
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; CHECK: [[IDX:%[0-9]+]](s64) = COPY %x1
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; CHECK: [[SIZE:%[0-9]+]](s64) = G_CONSTANT 64
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; CHECK: [[OFFSET1:%[0-9]+]](s64) = G_MUL [[SIZE]], [[IDX]]
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; CHECK: [[BASE1:%[0-9]+]](p0) = G_GEP [[BASE]], [[OFFSET1]](s64)
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; CHECK: [[OFFSET2:%[0-9]+]](s64) = G_CONSTANT 40
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; CHECK: [[BASE2:%[0-9]+]](p0) = G_GEP [[BASE1]], [[OFFSET2]](s64)
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; CHECK: %x0 = COPY [[BASE2]](p0)
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%res = getelementptr %type1, %type1* %addr, i64 %idx, i32 2, i32 2
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ret i32* %res
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}
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