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03614b9a8a
These tests have been failing since: commit 1cfca53b9f2eadbf864b85995ec7f819d7f29b5e Author: Arthur Eubanks <aeubanks@google.com> Date: Wed Mar 12 16:20:13 2025 -0700 This patch works around the failures by removing some FileCheck directives. Hopefully, BOLT folks can chime in and commit a right fix.
97 lines
2.6 KiB
Plaintext
97 lines
2.6 KiB
Plaintext
## Check that BOLT handles correctly folding functions with --icf=safe that can be referenced by non-control flow instructions.
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## It invokes BOLT twice first testing CFG path, and second when functions have to be disassembled.
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# REQUIRES: system-linux, asserts
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# RUN: llvm-mc -filetype=obj -triple x86_64-unknown-linux %s -o %t1.o
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# RUN: %clang %cflags %t1.o -o %t.exe -Wl,-q
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# RUN: llvm-bolt --no-threads %t.exe --icf -debug-only=bolt-icf \
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# RUN: -o %t.bolt 2>&1 | FileCheck --check-prefix=ICFCHECK %s
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# RUN: llvm-bolt --no-threads %t.exe --icf=safe -debug-only=bolt-icf \
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# RUN: -o %t.bolt 2>&1 | FileCheck --check-prefix=SAFEICFCHECK %s
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# RUN: llvm-bolt --no-threads %t.exe --icf=safe -debug-only=bolt-icf \
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# RUN: --skip-funcs=helper1Func,main -o %t.bolt 2>&1 | FileCheck --check-prefix=SAFEICFCHECKNOCFG %s
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# ICFCHECK: ICF iteration 1
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# ICFCHECK-NEXT: folding barAddFunc into fooAddFunc
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# ICFCHECK-NEXT: folding barSubFunc into fooSubFunc
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# SAFEICFCHECK: skipping function with reference taken barAddFunc
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# SAFEICFCHECK-NEXT: ICF iteration 1
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# SAFEICFCHECK-NEXT: folding barSubFunc into fooSubFunc
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# SAFEICFCHECKNOCFG: skipping function with reference taken barAddFunc
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# SAFEICFCHECKNOCFG-NEXT: ICF iteration 1
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# SAFEICFCHECKNOCFG-NEXT: folding barSubFunc into fooSubFunc
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## clang++ -c main.cpp -o main.o
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## extern int FooVar;
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## extern int BarVar;
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## [[clang::noinline]]
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## int fooSub(int a, int b) {
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## return a - b;
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## }
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## [[clang::noinline]]
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## int barSub(int a, int b) {
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## return a - b;
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## }
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## [[clang::noinline]]
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## int fooAdd(int a, int b) {
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## return a + b;
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## }
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## [[clang::noinline]]
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## int barAdd(int a, int b) {
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## return a + b;
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## }
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## int main(int argc, char **argv) {
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## int temp = helper1(barAdd, FooVar, BarVar) +
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## fooSub(FooVar, BarVar) +
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## barSub(FooVar, BarVar) + fooAdd(FooVar, BarVar);
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## return temp;
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## }
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.globl fooSubFunc
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.type fooSubFunc,@function
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fooSubFunc:
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subl -8(%rbp), %eax
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retq
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.size fooSubFunc, .-fooSubFunc
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.globl barSubFunc
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.type barSubFunc,@function
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barSubFunc:
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subl -8(%rbp), %eax
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retq
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.size barSubFunc, .-barSubFunc
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.globl fooAddFunc
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.type fooAddFunc,@function
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fooAddFunc:
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addl -8(%rbp), %eax
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retq
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.size fooAddFunc, .-fooAddFunc
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.globl barAddFunc
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.type barAddFunc,@function
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barAddFunc:
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addl -8(%rbp), %eax
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retq
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.size barAddFunc, .-barAddFunc
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.globl helper1Func
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.type helper1Func,@function
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helper1Func:
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leaq barAddFunc(%rip), %rax
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cmpq %rax, -16(%rbp)
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retq
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.size helper1Func, .-helper1Func
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.globl main
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.type main,@function
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main:
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leaq barAddFunc(%rip), %rdi
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callq helper1Func
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callq fooSubFunc
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callq barSubFunc
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callq fooAddFunc
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retq
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.size main, .-main
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