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f7ea499702
Part of the effort to refactoring frame pointer code generation. We used to use two function attributes "no-frame-pointer-elim" and "no-frame-pointer-elim-non-leaf" to represent three kinds of frame pointer usage: (all) frames use frame pointer, (non-leaf) frames use frame pointer, (none) frame use frame pointer. This CL makes the idea explicit by using only one enum function attribute "frame-pointer" Option "-frame-pointer=" replaces "-disable-fp-elim" for tools such as llc. "no-frame-pointer-elim" and "no-frame-pointer-elim-non-leaf" are still supported for easy migration to "frame-pointer". tests are mostly updated with // replace command line args ‘-disable-fp-elim=false’ with ‘-frame-pointer=none’ grep -iIrnl '\-disable-fp-elim=false' * | xargs sed -i '' -e "s/-disable-fp-elim=false/-frame-pointer=none/g" // replace command line args ‘-disable-fp-elim’ with ‘-frame-pointer=all’ grep -iIrnl '\-disable-fp-elim' * | xargs sed -i '' -e "s/-disable-fp-elim/-frame-pointer=all/g" Patch by Yuanfang Chen (tabloid.adroit)! Differential Revision: https://reviews.llvm.org/D56351 llvm-svn: 351049
105 lines
3.1 KiB
LLVM
105 lines
3.1 KiB
LLVM
; RUN: llc -mtriple=aarch64-windows-msvc -frame-pointer=all %s -o - | FileCheck %s
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; RUN: llc -mtriple=aarch64-windows-msvc -fast-isel -frame-pointer=all %s -o - | FileCheck %s
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; RUN: llc -mtriple=aarch64-windows-msvc %s -o - | FileCheck %s --check-prefix=NOFP
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; RUN: llc -mtriple=aarch64-windows-msvc -fast-isel %s -o - | FileCheck %s --check-prefix=NOFP
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@env2 = common dso_local global [24 x i64]* null, align 8
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define dso_local void @bar() {
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%1 = call i8* @llvm.sponentry()
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%2 = load [24 x i64]*, [24 x i64]** @env2, align 8
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%3 = getelementptr inbounds [24 x i64], [24 x i64]* %2, i32 0, i32 0
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%4 = bitcast i64* %3 to i8*
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%5 = call i32 @_setjmpex(i8* %4, i8* %1) #2
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ret void
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}
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; CHECK: bar:
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; CHECK: mov x29, sp
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; CHECK: add x1, x29, #16
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; CEHCK: bl _setjmpex
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; NOFP: str x30, [sp, #-16]!
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; NOFP: add x1, sp, #16
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define dso_local void @foo([24 x i64]*) {
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%2 = alloca [24 x i64]*, align 8
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%3 = alloca i32, align 4
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%4 = alloca [100 x i32], align 4
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store [24 x i64]* %0, [24 x i64]** %2, align 8
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%5 = call i8* @llvm.sponentry()
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%6 = load [24 x i64]*, [24 x i64]** %2, align 8
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%7 = getelementptr inbounds [24 x i64], [24 x i64]* %6, i32 0, i32 0
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%8 = bitcast i64* %7 to i8*
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%9 = call i32 @_setjmpex(i8* %8, i8* %5)
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store i32 %9, i32* %3, align 4
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ret void
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}
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; CHECK: foo:
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; CHECK: sub sp, sp, #448
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; CHECK: add x29, sp, #432
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; CHECK: add x1, x29, #16
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; CEHCK: bl _setjmpex
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; NOFP: sub sp, sp, #432
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; NOFP: add x1, sp, #432
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define dso_local void @var_args(i8*, ...) {
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%2 = alloca i8*, align 8
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%3 = alloca i8*, align 8
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store i8* %0, i8** %2, align 8
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%4 = bitcast i8** %3 to i8*
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call void @llvm.va_start(i8* %4)
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%5 = load i8*, i8** %3, align 8
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%6 = getelementptr inbounds i8, i8* %5, i64 8
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store i8* %6, i8** %3, align 8
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%7 = bitcast i8* %5 to i32*
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%8 = load i32, i32* %7, align 8
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%9 = bitcast i8** %3 to i8*
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call void @llvm.va_end(i8* %9)
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%10 = call i8* @llvm.sponentry()
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%11 = load [24 x i64]*, [24 x i64]** @env2, align 8
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%12 = getelementptr inbounds [24 x i64], [24 x i64]* %11, i32 0, i32 0
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%13 = bitcast i64* %12 to i8*
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%14 = call i32 @_setjmpex(i8* %13, i8* %10) #3
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ret void
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}
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; CHECK: var_args:
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; CHECK: sub sp, sp, #96
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; CHECK: add x29, sp, #16
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; CHECK: add x1, x29, #80
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; CEHCK: bl _setjmpex
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; NOFP: sub sp, sp, #96
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; NOFP: add x1, sp, #96
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define dso_local void @manyargs(i64 %x1, i64 %x2, i64 %x3, i64 %x4, i64 %x5, i64 %x6, i64 %x7, i64 %x8, i64 %x9, i64 %x10) {
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%1 = call i8* @llvm.sponentry()
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%2 = load [24 x i64]*, [24 x i64]** @env2, align 8
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%3 = getelementptr inbounds [24 x i64], [24 x i64]* %2, i32 0, i32 0
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%4 = bitcast i64* %3 to i8*
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%5 = call i32 @_setjmpex(i8* %4, i8* %1) #2
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ret void
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}
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; CHECK: manyargs:
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; CHECK: stp x29, x30, [sp, #-16]!
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; CHECK: add x1, x29, #16
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; NOFP: str x30, [sp, #-16]!
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; NOFP: add x1, sp, #16
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; Function Attrs: nounwind readnone
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declare i8* @llvm.sponentry()
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; Function Attrs: returns_twice
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declare dso_local i32 @_setjmpex(i8*, i8*)
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; Function Attrs: nounwind
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declare void @llvm.va_start(i8*) #1
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; Function Attrs: nounwind
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declare void @llvm.va_end(i8*) #1
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