https://llvm.org/bugs/show_bug.cgi?id=27124
Bug ID: 27124
Summary: WebAssembly backend crashes with "cannot select" on
AtomicLoad
Product: libraries
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: Backend: WebAssembly
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Classification: Unclassified
Created attachment 16124
--> https://llvm.org/bugs/attachment.cgi?id=16124&action=edit
llvm ir
STR:
llc cmpxchg_volatile.ll -march=wasm32 -filetype=asm
LLVM ERROR: Cannot select: 0xa778bf0: i32,ch = AtomicLoad<Volatile LD1[%12]>
0xa754a38, 0xa7788f0
0xa7788f0: i32,ch = CopyFromReg 0xa754a38, Register:i32 %vreg0
0xa778af0: i32 = Register %vreg0
In function: _Z7do_testIVNSt3__16atomicIcEEcEvv
This affects building "hello world" using iostream.
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