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ab195580bf
WebAssembly's load/store offsets are unsigned and don't wrap, so it's not valid to fold in a negative offset. llvm-svn: 290342
79 lines
2.0 KiB
LLVM
79 lines
2.0 KiB
LLVM
; RUN: llc < %s -asm-verbose=false \
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; RUN: -fast-isel -fast-isel-abort=1 -verify-machineinstrs \
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; RUN: | FileCheck %s
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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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; This tests very minimal fast-isel functionality.
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; CHECK-LABEL: immediate_f32:
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; CHECK: f32.const $push{{[0-9]+}}=, 0x1.4p1{{$}}
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define float @immediate_f32() {
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ret float 2.5
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}
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; CHECK-LABEL: immediate_f64:
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; CHECK: f64.const $push{{[0-9]+}}=, 0x1.4p1{{$}}
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define double @immediate_f64() {
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ret double 2.5
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}
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; CHECK-LABEL: bitcast_i32_f32:
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; CHECK: i32.reinterpret/f32 $push{{[0-9]+}}=, $0{{$}}
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define i32 @bitcast_i32_f32(float %x) {
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%y = bitcast float %x to i32
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ret i32 %y
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}
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; CHECK-LABEL: bitcast_f32_i32:
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; CHECK: f32.reinterpret/i32 $push{{[0-9]+}}=, $0{{$}}
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define float @bitcast_f32_i32(i32 %x) {
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%y = bitcast i32 %x to float
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ret float %y
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}
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; CHECK-LABEL: bitcast_i64_f64:
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; CHECK: i64.reinterpret/f64 $push{{[0-9]+}}=, $0{{$}}
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define i64 @bitcast_i64_f64(double %x) {
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%y = bitcast double %x to i64
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ret i64 %y
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}
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; CHECK-LABEL: bitcast_f64_i64:
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; CHECK: f64.reinterpret/i64 $push{{[0-9]+}}=, $0{{$}}
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define double @bitcast_f64_i64(i64 %x) {
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%y = bitcast i64 %x to double
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ret double %y
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}
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; Do fold offsets into geps.
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; CHECK-LABEL: do_fold_offset_into_gep:
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; CHECK: i64.load $push{{[0-9]+}}=, 8($0)
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define i64 @do_fold_offset_into_gep(i64* %p) {
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bb:
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%tmp = getelementptr inbounds i64, i64* %p, i32 1
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%tmp2 = load i64, i64* %tmp, align 8
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ret i64 %tmp2
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}
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; Don't fold negative offsets into geps.
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; CHECK-LABEL: dont_fold_negative_offset:
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; CHECK: i64.load $push{{[0-9]+}}=, 0($pop{{[0-9]+}})
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define i64 @dont_fold_negative_offset(i64* %p) {
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bb:
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%tmp = getelementptr inbounds i64, i64* %p, i32 -1
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%tmp2 = load i64, i64* %tmp, align 8
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ret i64 %tmp2
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}
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; Don't fold non-inbounds geps.
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; CHECK-LABEL: dont_fold_non_inbounds_gep:
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; CHECK: i64.load $push{{[0-9]+}}=, 0($pop{{[0-9]+}})
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define i64 @dont_fold_non_inbounds_gep(i64* %p) {
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bb:
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%tmp = getelementptr i64, i64* %p, i32 1
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%tmp2 = load i64, i64* %tmp, align 8
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ret i64 %tmp2
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}
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