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[WebAssembly] Change WebAssemblyMCLowerPrePass to ModulePass
It was a FunctionPass before, which subverted its purpose to collect ALL symbols before MCLowering, depending on how LLVM schedules function passes. Fixes https://bugs.llvm.org/show_bug.cgi?id=51555 Differential Revision: https://reviews.llvm.org/D109202
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Original file line number | Diff line number | Diff line change |
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; RUN: llc --mtriple=wasm32-unknown-unknown -asm-verbose=false %s -o - | FileCheck --check-prefixes CHECK -DPTR=i32 %s | ||
; RUN: llc --mtriple=wasm64-unknown-unknown -asm-verbose=false %s -o - | FileCheck --check-prefixes CHECK -DPTR=i64 %s | ||
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; empty function that does not use stack, to check WebAssemblyMCLowerPrePass | ||
; works correctly. | ||
define hidden void @bar() #0 { | ||
ret void | ||
} | ||
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; Function that uses explict stack, and should generate a reference to | ||
; __stack_pointer, along with the corresponding reloction entry. | ||
define hidden void @foo() #0 { | ||
entry: | ||
alloca i32, align 4 | ||
ret void | ||
} | ||
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; CHECK: .text | ||
; CHECK-NEXT: .file "stack-ptr-mclower.ll" | ||
; CHECK-NEXT: .section .text.bar,"",@ | ||
; CHECK-NEXT: .hidden bar | ||
; CHECK-NEXT: .globl bar | ||
; CHECK-NEXT: .globaltype __stack_pointer, [[PTR]] | ||
; CHECK-NEXT: .type bar,@function | ||
; CHECK-NEXT: bar: | ||
; CHECK-NEXT: .functype bar () -> () | ||
; CHECK-NEXT: end_function | ||
; CHECK-NEXT: .Lfunc_end0: | ||
; CHECK-NEXT: .size bar, .Lfunc_end0-bar | ||
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; CHECK: .section .text.foo,"",@ | ||
; CHECK-NEXT: .hidden foo | ||
; CHECK-NEXT: .globl foo | ||
; CHECK-NEXT: .type foo,@function | ||
; CHECK-NEXT: foo: | ||
; CHECK-NEXT: .functype foo () -> () | ||
; CHECK-NEXT: global.get __stack_pointer | ||
; CHECK-NEXT: [[PTR]].const 16 | ||
; CHECK-NEXT: [[PTR]].sub | ||
; CHECK-NEXT: drop | ||
; CHECK-NEXT: end_function | ||
; CHECK-NEXT: .Lfunc_end1: | ||
; CHECK-NEXT: .size foo, .Lfunc_end1-foo |