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4719e018d5
Summary: Due to previous work to make WebAssembly MC by default stack-only inline assembly now "just works" (previously it didn't since it had no way to know types of registers), so no further work required. So far we only have tests (in inline-asm.ll) which test with non-existing instructions, so this adds a test that roundtrips both the inline assembly and its surrounding code thru the assembler. Reviewers: dschuff, sunfish Subscribers: sbc100, jgravelle-google, eraman, aheejin, llvm-commits Differential Revision: https://reviews.llvm.org/D52914 llvm-svn: 344977
44 lines
1.2 KiB
LLVM
44 lines
1.2 KiB
LLVM
; RUN: llc < %s | llvm-mc -triple=wasm32-unknown-unknown | FileCheck --match-full-lines %s
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; Test basic inline assembly can actually be assembled by the assembler.
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; .ll code below is the result of this code run thru
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; clang -target wasm32-unknown-unknown-wasm -O2 -S -emit-llvm test.c
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; int main(int argc, const char *argv[]) {
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; int src = 1;
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; int dst;
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; asm ("i32.const\t2\n"
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; "\tget_local\t%1\n"
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; "\ti32.add\n"
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; "\tset_local\t%0"
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; : "=r" (dst)
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; : "r" (src));
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; return dst != 3;
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; }
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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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; CHECK-LABEL: main:
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; CHECK-NEXT: .param i32, i32
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; CHECK-NEXT: .local i32
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; CHECK-NEXT: i32.const 1
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; CHECK-NEXT: set_local [[SRC:[0-9]+]]
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; CHECK-NEXT: i32.const 2
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; CHECK-NEXT: get_local [[SRC]]
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; CHECK-NEXT: i32.add
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; CHECK-NEXT: set_local [[DST:[0-9]+]]
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; CHECK-NEXT: get_local [[DST]]
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; CHECK-NEXT: i32.const 3
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; CHECK-NEXT: i32.ne
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define i32 @main(i32 %argc, i8** nocapture readnone %argv) #0 {
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entry:
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%0 = tail call i32 asm "i32.const\092\0A\09get_local\09$1\0A\09i32.add\0A\09set_local\09$0", "=r,r"(i32 1) #1
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%cmp = icmp ne i32 %0, 3
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%conv = zext i1 %cmp to i32
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ret i32 %conv
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}
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