inline-asm-roundtrip.ll
1.23 KB
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; RUN: llc < %s | llvm-mc -triple=wasm32-unknown-unknown | FileCheck --match-full-lines %s
; Test basic inline assembly can actually be assembled by the assembler.
; .ll code below is the result of this code run thru
; clang -target wasm32-unknown-unknown-wasm -O2 -S -emit-llvm test.c
; int main(int argc, const char *argv[]) {
; int src = 1;
; int dst;
; asm ("i32.const\t2\n"
; "\tlocal.get\t%1\n"
; "\ti32.add\n"
; "\tlocal.set\t%0"
; : "=r" (dst)
; : "r" (src));
; return dst != 3;
; }
target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
target triple = "wasm32-unknown-unknown"
; CHECK-LABEL: main:
; CHECK-NEXT: .functype main (i32, i32) -> (i32)
; CHECK-NEXT: .local i32
; CHECK-NEXT: i32.const 1
; CHECK-NEXT: local.set [[SRC:[0-9]+]]
; CHECK-NEXT: i32.const 2
; CHECK-NEXT: local.get [[SRC]]
; CHECK-NEXT: i32.add
; CHECK-NEXT: local.set [[DST:[0-9]+]]
; CHECK-NEXT: local.get [[DST]]
; CHECK-NEXT: i32.const 3
; CHECK-NEXT: i32.ne
define i32 @main(i32 %argc, i8** nocapture readnone %argv) #0 {
entry:
%0 = tail call i32 asm "i32.const\092\0A\09local.get\09$1\0A\09i32.add\0A\09local.set\09$0", "=r,r"(i32 1) #1
%cmp = icmp ne i32 %0, 3
%conv = zext i1 %cmp to i32
ret i32 %conv
}