forked from OSchip/llvm-project
420 lines
12 KiB
LLVM
420 lines
12 KiB
LLVM
; RUN: llc < %s -asm-verbose=false | FileCheck %s
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; Test constant load and store address offsets.
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target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
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target triple = "wasm32-unknown-unknown"
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; With an nuw add, we can fold an offset.
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; CHECK-LABEL: load_i32_with_folded_offset:
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; CHECK: i32.load $push0=, 24($0){{$}}
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define i32 @load_i32_with_folded_offset(i32* %p) {
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%q = ptrtoint i32* %p to i32
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%r = add nuw i32 %q, 24
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%s = inttoptr i32 %r to i32*
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%t = load i32, i32* %s
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ret i32 %t
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}
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; With an inbounds gep, we can fold an offset.
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; CHECK-LABEL: load_i32_with_folded_gep_offset:
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; CHECK: i32.load $push0=, 24($0){{$}}
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define i32 @load_i32_with_folded_gep_offset(i32* %p) {
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%s = getelementptr inbounds i32, i32* %p, i32 6
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%t = load i32, i32* %s
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ret i32 %t
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}
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; We can't fold a negative offset though, even with an inbounds gep.
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; CHECK-LABEL: load_i32_with_unfolded_gep_negative_offset:
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; CHECK: i32.const $push0=, -24{{$}}
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; CHECK: i32.add $push1=, $0, $pop0{{$}}
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; CHECK: i32.load $push2=, 0($pop1){{$}}
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define i32 @load_i32_with_unfolded_gep_negative_offset(i32* %p) {
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%s = getelementptr inbounds i32, i32* %p, i32 -6
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%t = load i32, i32* %s
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ret i32 %t
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}
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; Without nuw, and even with nsw, we can't fold an offset.
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; CHECK-LABEL: load_i32_with_unfolded_offset:
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; CHECK: i32.const $push0=, 24{{$}}
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; CHECK: i32.add $push1=, $0, $pop0{{$}}
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; CHECK: i32.load $push2=, 0($pop1){{$}}
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define i32 @load_i32_with_unfolded_offset(i32* %p) {
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%q = ptrtoint i32* %p to i32
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%r = add nsw i32 %q, 24
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%s = inttoptr i32 %r to i32*
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%t = load i32, i32* %s
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ret i32 %t
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}
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; Without inbounds, we can't fold a gep offset.
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; CHECK-LABEL: load_i32_with_unfolded_gep_offset:
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; CHECK: i32.const $push0=, 24{{$}}
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; CHECK: i32.add $push1=, $0, $pop0{{$}}
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; CHECK: i32.load $push2=, 0($pop1){{$}}
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define i32 @load_i32_with_unfolded_gep_offset(i32* %p) {
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%s = getelementptr i32, i32* %p, i32 6
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%t = load i32, i32* %s
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ret i32 %t
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}
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; Same as above but with i64.
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; CHECK-LABEL: load_i64_with_folded_offset:
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; CHECK: i64.load $push0=, 24($0){{$}}
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define i64 @load_i64_with_folded_offset(i64* %p) {
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%q = ptrtoint i64* %p to i32
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%r = add nuw i32 %q, 24
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%s = inttoptr i32 %r to i64*
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%t = load i64, i64* %s
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ret i64 %t
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}
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; Same as above but with i64.
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; CHECK-LABEL: load_i64_with_folded_gep_offset:
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; CHECK: i64.load $push0=, 24($0){{$}}
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define i64 @load_i64_with_folded_gep_offset(i64* %p) {
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%s = getelementptr inbounds i64, i64* %p, i32 3
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%t = load i64, i64* %s
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ret i64 %t
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}
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; Same as above but with i64.
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; CHECK-LABEL: load_i64_with_unfolded_gep_negative_offset:
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; CHECK: i32.const $push0=, -24{{$}}
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; CHECK: i32.add $push1=, $0, $pop0{{$}}
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; CHECK: i64.load $push2=, 0($pop1){{$}}
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define i64 @load_i64_with_unfolded_gep_negative_offset(i64* %p) {
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%s = getelementptr inbounds i64, i64* %p, i32 -3
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%t = load i64, i64* %s
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ret i64 %t
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}
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; Same as above but with i64.
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; CHECK-LABEL: load_i64_with_unfolded_offset:
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; CHECK: i32.const $push0=, 24{{$}}
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; CHECK: i32.add $push1=, $0, $pop0{{$}}
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; CHECK: i64.load $push2=, 0($pop1){{$}}
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define i64 @load_i64_with_unfolded_offset(i64* %p) {
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%q = ptrtoint i64* %p to i32
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%r = add nsw i32 %q, 24
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%s = inttoptr i32 %r to i64*
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%t = load i64, i64* %s
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ret i64 %t
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}
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; Same as above but with i64.
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; CHECK-LABEL: load_i64_with_unfolded_gep_offset:
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; CHECK: i32.const $push0=, 24{{$}}
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; CHECK: i32.add $push1=, $0, $pop0{{$}}
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; CHECK: i64.load $push2=, 0($pop1){{$}}
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define i64 @load_i64_with_unfolded_gep_offset(i64* %p) {
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%s = getelementptr i64, i64* %p, i32 3
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%t = load i64, i64* %s
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ret i64 %t
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}
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; CHECK-LABEL: load_i32_with_folded_or_offset:
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; CHECK: i32.load8_s $push{{[0-9]+}}=, 2($pop{{[0-9]+}}){{$}}
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define i32 @load_i32_with_folded_or_offset(i32 %x) {
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%and = and i32 %x, -4
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%t0 = inttoptr i32 %and to i8*
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%arrayidx = getelementptr inbounds i8, i8* %t0, i32 2
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%t1 = load i8, i8* %arrayidx, align 1
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%conv = sext i8 %t1 to i32
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ret i32 %conv
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}
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; Same as above but with store.
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; CHECK-LABEL: store_i32_with_folded_offset:
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; CHECK: i32.store $discard=, 24($0), $pop0{{$}}
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define void @store_i32_with_folded_offset(i32* %p) {
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%q = ptrtoint i32* %p to i32
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%r = add nuw i32 %q, 24
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%s = inttoptr i32 %r to i32*
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store i32 0, i32* %s
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ret void
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}
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; Same as above but with store.
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; CHECK-LABEL: store_i32_with_folded_gep_offset:
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; CHECK: i32.store $discard=, 24($0), $pop0{{$}}
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define void @store_i32_with_folded_gep_offset(i32* %p) {
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%s = getelementptr inbounds i32, i32* %p, i32 6
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store i32 0, i32* %s
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ret void
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}
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; Same as above but with store.
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; CHECK-LABEL: store_i32_with_unfolded_gep_negative_offset:
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; CHECK: i32.const $push0=, -24{{$}}
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; CHECK: i32.add $push1=, $0, $pop0{{$}}
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; CHECK: i32.store $discard=, 0($pop1), $pop2{{$}}
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define void @store_i32_with_unfolded_gep_negative_offset(i32* %p) {
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%s = getelementptr inbounds i32, i32* %p, i32 -6
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store i32 0, i32* %s
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ret void
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}
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; Same as above but with store.
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; CHECK-LABEL: store_i32_with_unfolded_offset:
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; CHECK: i32.const $push0=, 24{{$}}
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; CHECK: i32.add $push1=, $0, $pop0{{$}}
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; CHECK: i32.store $discard=, 0($pop1), $pop2{{$}}
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define void @store_i32_with_unfolded_offset(i32* %p) {
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%q = ptrtoint i32* %p to i32
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%r = add nsw i32 %q, 24
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%s = inttoptr i32 %r to i32*
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store i32 0, i32* %s
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ret void
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}
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; Same as above but with store.
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; CHECK-LABEL: store_i32_with_unfolded_gep_offset:
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; CHECK: i32.const $push0=, 24{{$}}
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; CHECK: i32.add $push1=, $0, $pop0{{$}}
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; CHECK: i32.store $discard=, 0($pop1), $pop2{{$}}
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define void @store_i32_with_unfolded_gep_offset(i32* %p) {
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%s = getelementptr i32, i32* %p, i32 6
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store i32 0, i32* %s
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ret void
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}
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; Same as above but with store with i64.
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; CHECK-LABEL: store_i64_with_folded_offset:
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; CHECK: i64.store $discard=, 24($0), $pop0{{$}}
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define void @store_i64_with_folded_offset(i64* %p) {
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%q = ptrtoint i64* %p to i32
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%r = add nuw i32 %q, 24
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%s = inttoptr i32 %r to i64*
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store i64 0, i64* %s
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ret void
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}
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; Same as above but with store with i64.
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; CHECK-LABEL: store_i64_with_folded_gep_offset:
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; CHECK: i64.store $discard=, 24($0), $pop0{{$}}
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define void @store_i64_with_folded_gep_offset(i64* %p) {
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%s = getelementptr inbounds i64, i64* %p, i32 3
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store i64 0, i64* %s
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ret void
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}
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; Same as above but with store with i64.
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; CHECK-LABEL: store_i64_with_unfolded_gep_negative_offset:
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; CHECK: i32.const $push0=, -24{{$}}
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; CHECK: i32.add $push1=, $0, $pop0{{$}}
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; CHECK: i64.store $discard=, 0($pop1), $pop2{{$}}
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define void @store_i64_with_unfolded_gep_negative_offset(i64* %p) {
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%s = getelementptr inbounds i64, i64* %p, i32 -3
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store i64 0, i64* %s
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ret void
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}
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; Same as above but with store with i64.
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; CHECK-LABEL: store_i64_with_unfolded_offset:
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; CHECK: i32.const $push0=, 24{{$}}
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; CHECK: i32.add $push1=, $0, $pop0{{$}}
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; CHECK: i64.store $discard=, 0($pop1), $pop2{{$}}
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define void @store_i64_with_unfolded_offset(i64* %p) {
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%q = ptrtoint i64* %p to i32
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%r = add nsw i32 %q, 24
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%s = inttoptr i32 %r to i64*
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store i64 0, i64* %s
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ret void
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}
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; Same as above but with store with i64.
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; CHECK-LABEL: store_i64_with_unfolded_gep_offset:
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; CHECK: i32.const $push0=, 24{{$}}
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; CHECK: i32.add $push1=, $0, $pop0{{$}}
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; CHECK: i64.store $discard=, 0($pop1), $pop2{{$}}
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define void @store_i64_with_unfolded_gep_offset(i64* %p) {
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%s = getelementptr i64, i64* %p, i32 3
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store i64 0, i64* %s
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ret void
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}
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; CHECK-LABEL: store_i32_with_folded_or_offset:
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; CHECK: i32.store8 $discard=, 2($pop{{[0-9]+}}), $pop{{[0-9]+}}{{$}}
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define void @store_i32_with_folded_or_offset(i32 %x) {
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%and = and i32 %x, -4
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%t0 = inttoptr i32 %and to i8*
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%arrayidx = getelementptr inbounds i8, i8* %t0, i32 2
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store i8 0, i8* %arrayidx, align 1
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ret void
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}
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; When loading from a fixed address, materialize a zero.
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; CHECK-LABEL: load_i32_from_numeric_address
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; CHECK: i32.const $push0=, 0{{$}}
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; CHECK: i32.load $push1=, 42($pop0){{$}}
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define i32 @load_i32_from_numeric_address() {
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%s = inttoptr i32 42 to i32*
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%t = load i32, i32* %s
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ret i32 %t
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}
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; CHECK-LABEL: load_i32_from_global_address
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; CHECK: i32.const $push0=, 0{{$}}
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; CHECK: i32.load $push1=, gv($pop0){{$}}
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@gv = global i32 0
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define i32 @load_i32_from_global_address() {
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%t = load i32, i32* @gv
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ret i32 %t
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}
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; CHECK-LABEL: store_i32_to_numeric_address:
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; CHECK-NEXT: i32.const $push0=, 0{{$}}
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; CHECK-NEXT: i32.const $push1=, 0{{$}}
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; CHECK-NEXT: i32.store $discard=, 42($pop0), $pop1{{$}}
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define void @store_i32_to_numeric_address() {
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%s = inttoptr i32 42 to i32*
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store i32 0, i32* %s
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ret void
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}
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; CHECK-LABEL: store_i32_to_global_address:
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; CHECK: i32.const $push0=, 0{{$}}
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; CHECK: i32.const $push1=, 0{{$}}
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; CHECK: i32.store $discard=, gv($pop0), $pop1{{$}}
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define void @store_i32_to_global_address() {
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store i32 0, i32* @gv
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ret void
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}
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; Fold an offset into a sign-extending load.
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; CHECK-LABEL: load_i8_s_with_folded_offset:
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; CHECK: i32.load8_s $push0=, 24($0){{$}}
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define i32 @load_i8_s_with_folded_offset(i8* %p) {
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%q = ptrtoint i8* %p to i32
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%r = add nuw i32 %q, 24
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%s = inttoptr i32 %r to i8*
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%t = load i8, i8* %s
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%u = sext i8 %t to i32
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ret i32 %u
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}
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; Fold a gep offset into a sign-extending load.
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; CHECK-LABEL: load_i8_s_with_folded_gep_offset:
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; CHECK: i32.load8_s $push0=, 24($0){{$}}
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define i32 @load_i8_s_with_folded_gep_offset(i8* %p) {
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%s = getelementptr inbounds i8, i8* %p, i32 24
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%t = load i8, i8* %s
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%u = sext i8 %t to i32
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ret i32 %u
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}
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; Fold an offset into a zero-extending load.
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; CHECK-LABEL: load_i8_u_with_folded_offset:
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; CHECK: i32.load8_u $push0=, 24($0){{$}}
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define i32 @load_i8_u_with_folded_offset(i8* %p) {
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%q = ptrtoint i8* %p to i32
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%r = add nuw i32 %q, 24
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%s = inttoptr i32 %r to i8*
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%t = load i8, i8* %s
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%u = zext i8 %t to i32
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ret i32 %u
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}
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; Fold a gep offset into a zero-extending load.
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; CHECK-LABEL: load_i8_u_with_folded_gep_offset:
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; CHECK: i32.load8_u $push0=, 24($0){{$}}
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define i32 @load_i8_u_with_folded_gep_offset(i8* %p) {
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%s = getelementptr inbounds i8, i8* %p, i32 24
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%t = load i8, i8* %s
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%u = zext i8 %t to i32
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ret i32 %u
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}
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; Fold an offset into a truncating store.
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; CHECK-LABEL: store_i8_with_folded_offset:
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; CHECK: i32.store8 $discard=, 24($0), $pop0{{$}}
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define void @store_i8_with_folded_offset(i8* %p) {
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%q = ptrtoint i8* %p to i32
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%r = add nuw i32 %q, 24
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%s = inttoptr i32 %r to i8*
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store i8 0, i8* %s
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ret void
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}
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; Fold a gep offset into a truncating store.
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; CHECK-LABEL: store_i8_with_folded_gep_offset:
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; CHECK: i32.store8 $discard=, 24($0), $pop0{{$}}
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define void @store_i8_with_folded_gep_offset(i8* %p) {
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%s = getelementptr inbounds i8, i8* %p, i32 24
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store i8 0, i8* %s
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ret void
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}
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; Fold the offsets when lowering aggregate loads and stores.
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; CHECK-LABEL: aggregate_load_store:
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; CHECK: i32.load $2=, 0($0){{$}}
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; CHECK: i32.load $3=, 4($0){{$}}
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; CHECK: i32.load $4=, 8($0){{$}}
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; CHECK: i32.load $push0=, 12($0){{$}}
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; CHECK: i32.store $discard=, 12($1), $pop0{{$}}
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; CHECK: i32.store $discard=, 8($1), $4{{$}}
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; CHECK: i32.store $discard=, 4($1), $3{{$}}
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; CHECK: i32.store $discard=, 0($1), $2{{$}}
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define void @aggregate_load_store({i32,i32,i32,i32}* %p, {i32,i32,i32,i32}* %q) {
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; volatile so that things stay in order for the tests above
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%t = load volatile {i32,i32,i32,i32}, {i32, i32,i32,i32}* %p
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store volatile {i32,i32,i32,i32} %t, {i32, i32,i32,i32}* %q
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ret void
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}
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; Fold the offsets when lowering aggregate return values. The stores get
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; merged into i64 stores.
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; CHECK-LABEL: aggregate_return:
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; CHECK: i64.const $push0=, 0{{$}}
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; CHECK: i64.store $push1=, 8($0):p2align=2, $pop0{{$}}
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; CHECK: i64.store $discard=, 0($0):p2align=2, $pop1{{$}}
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define {i32,i32,i32,i32} @aggregate_return() {
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ret {i32,i32,i32,i32} zeroinitializer
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}
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; Fold the offsets when lowering aggregate return values. The stores are not
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; merged.
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; CHECK-LABEL: aggregate_return_without_merge:
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; CHECK: i32.const $push0=, 0{{$}}
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; CHECK: i32.store8 $push1=, 14($0), $pop0{{$}}
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; CHECK: i32.store16 $push2=, 12($0), $pop1{{$}}
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; CHECK: i32.store $discard=, 8($0), $pop2{{$}}
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; CHECK: i64.const $push3=, 0{{$}}
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; CHECK: i64.store $discard=, 0($0), $pop3{{$}}
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define {i64,i32,i16,i8} @aggregate_return_without_merge() {
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ret {i64,i32,i16,i8} zeroinitializer
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}
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