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llvm-project/clang/test/Driver/frame-pointer.c
Francesco Petrogalli f82023d72e
[clang][driver][arm][macho] Default to -mframe-pointer=non-leaf. (#154216) 
The commit in [1] changes the behavior of the Arm backend for the
attribute frame-pointer=all. Before [1], leaf functions marked with
frame-pointer=all were not emitting the frame-pointer.

After [1], frame-pointer=all started generating frame pointer for all
functions, including leaf functions.

However, the default behavior for the driver in clang is to emit the
command line option `-mframe-pointer=all` on Arm, if no options for
handling the frame pointer is specified at command line. This causes
observable regressions.

This patch addresses these regressions by configuring the driver so
to emit `-mframe-pointer=non-leaf` when targeting Arm.

Codegen tests dealing with frame pointer generation have been extended
to handle functions with a tail call, since this configuration was
missing.

[1] 4a2bd78f5b0d0661c23dff9c4b93a393a49dbf9a
2025-09-09 18:39:26 +00:00

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// RUN: %clang --target=i386-pc-linux -### -S -O0 %s 2>&1 | FileCheck -check-prefix=CHECK0-32 %s
// RUN: %clang --target=i386-pc-linux -### -S -O1 %s 2>&1 | FileCheck -check-prefix=CHECK1-32 %s
// RUN: %clang --target=i386-pc-linux -### -S -O2 %s 2>&1 | FileCheck -check-prefix=CHECK2-32 %s
// RUN: %clang --target=i386-pc-linux -### -S -O3 %s 2>&1 | FileCheck -check-prefix=CHECK3-32 %s
// RUN: %clang --target=i386-pc-linux -### -S -Os %s 2>&1 | FileCheck -check-prefix=CHECKs-32 %s
// RUN: %clang --target=i386-linux-android -### -S -O0 %s 2>&1 | FileCheck -check-prefix=CHECK-ANDROID %s
// RUN: %clang --target=i386-linux-android -### -S -O1 %s 2>&1 | FileCheck -check-prefix=CHECK-ANDROID %s
// RUN: %clang --target=i386-linux-android -### -S -Os %s 2>&1 | FileCheck -check-prefix=CHECK-ANDROID %s
// RUN: %clang --target=x86_64-pc-linux -### -S -O0 %s 2>&1 | FileCheck -check-prefix=CHECK0-64 %s
// RUN: %clang --target=x86_64-pc-linux -### -S -O1 %s 2>&1 | FileCheck -check-prefix=CHECK1-64 %s
// RUN: %clang --target=x86_64-pc-linux -### -S -O2 %s 2>&1 | FileCheck -check-prefix=CHECK2-64 %s
// RUN: %clang --target=x86_64-pc-linux -### -S -O3 %s 2>&1 | FileCheck -check-prefix=CHECK3-64 %s
// RUN: %clang --target=x86_64-pc-linux -### -S -Os %s 2>&1 | FileCheck -check-prefix=CHECKs-64 %s
// RUN: %clang --target=x86_64-pc-win32-macho -### -S -O3 %s 2>&1 | FileCheck -check-prefix=CHECK-MACHO-64 %s
// RUN: %clang --target=x86_64-linux-android -### -S -O0 %s 2>&1 | FileCheck -check-prefix=CHECK-ANDROID %s
// RUN: %clang --target=x86_64-linux-android -### -S -O1 %s 2>&1 | FileCheck -check-prefix=CHECK-ANDROID %s
// RUN: %clang --target=x86_64-linux-android -### -S -Os %s 2>&1 | FileCheck -check-prefix=CHECK-ANDROID %s
// Trust the above to get the optimizations right, and just test other targets
// that want this by default.
// RUN: %clang --target=s390x-pc-linux -### -S -O0 %s 2>&1 | FileCheck -check-prefix=CHECK0-64 %s
// RUN: %clang --target=s390x-pc-linux -### -S -O1 %s 2>&1 | FileCheck -check-prefix=CHECK1-64 %s
// RUN: %clang --target=powerpc-unknown-linux-gnu -### -S -O0 %s 2>&1 | FileCheck -check-prefix=CHECK0-64 %s
// RUN: %clang --target=powerpc-unknown-linux-gnu -### -S -O1 %s 2>&1 | FileCheck -check-prefix=CHECK1-64 %s
// RUN: %clang --target=powerpc64-unknown-linux-gnu -### -S -O0 %s 2>&1 | FileCheck -check-prefix=CHECK0-64 %s
// RUN: %clang --target=powerpc64-unknown-linux-gnu -### -S -O1 %s 2>&1 | FileCheck -check-prefix=CHECK1-64 %s
// RUN: %clang --target=powerpc64le-unknown-linux-gnu -### -S -O0 %s 2>&1 | FileCheck -check-prefix=CHECK0-64 %s
// RUN: %clang --target=powerpc64le-unknown-linux-gnu -### -S -O1 %s 2>&1 | FileCheck -check-prefix=CHECK1-64 %s
// RUN: %clang --target=mips-linux-gnu -### -S -O0 %s 2>&1 | FileCheck -check-prefix=CHECK0-32 %s
// RUN: %clang --target=mips-linux-gnu -### -S -O1 %s 2>&1 | FileCheck -check-prefix=CHECK1-32 %s
// RUN: %clang --target=mipsel-linux-gnu -### -S -O0 %s 2>&1 | FileCheck -check-prefix=CHECK0-32 %s
// RUN: %clang --target=mipsel-linux-gnu -### -S -O1 %s 2>&1 | FileCheck -check-prefix=CHECK1-32 %s
// RUN: %clang --target=mips64-linux-gnu -### -S -O0 %s 2>&1 | FileCheck -check-prefix=CHECK0-32 %s
// RUN: %clang --target=mips64-linux-gnu -### -S -O1 %s 2>&1 | FileCheck -check-prefix=CHECK1-32 %s
// RUN: %clang --target=mips64el-linux-gnu -### -S -O0 %s 2>&1 | FileCheck -check-prefix=CHECK0-32 %s
// RUN: %clang --target=mips64el-linux-gnu -### -S -O1 %s 2>&1 | FileCheck -check-prefix=CHECK1-32 %s
// RUN: %clang --target=riscv32-unknown-elf -### -S -O0 %s 2>&1 | FileCheck -check-prefix=CHECK0-32 %s
// RUN: %clang --target=riscv32-unknown-elf -### -S -O1 %s 2>&1 | FileCheck -check-prefix=CHECK1-32 %s
// RUN: %clang --target=riscv32-unknown-elf -### -S -O2 %s 2>&1 | FileCheck -check-prefix=CHECK2-32 %s
// RUN: %clang --target=riscv32-unknown-elf -### -S -O3 %s 2>&1 | FileCheck -check-prefix=CHECK3-32 %s
// RUN: %clang --target=riscv32-unknown-elf -### -S -Os %s 2>&1 | FileCheck -check-prefix=CHECKs-32 %s
// RUN: %clang --target=riscv64-unknown-elf -### -S -O0 %s 2>&1 | FileCheck -check-prefix=CHECK0-64 %s
// RUN: %clang --target=riscv64-unknown-elf -### -S -O1 %s 2>&1 | FileCheck -check-prefix=CHECK1-64 %s
// RUN: %clang --target=riscv64-unknown-elf -### -S -O2 %s 2>&1 | FileCheck -check-prefix=CHECK2-64 %s
// RUN: %clang --target=riscv64-unknown-elf -### -S -O3 %s 2>&1 | FileCheck -check-prefix=CHECK3-64 %s
// RUN: %clang --target=riscv64-unknown-elf -### -S -Os %s 2>&1 | FileCheck -check-prefix=CHECKs-64 %s
// RUN: %clang --target=riscv32-unknown-linux-gnu -### -S -O0 %s 2>&1 | FileCheck -check-prefix=CHECK0-32 %s
// RUN: %clang --target=riscv32-unknown-linux-gnu -### -S -O1 %s 2>&1 | FileCheck -check-prefix=CHECK1-32 %s
// RUN: %clang --target=riscv32-unknown-linux-gnu -### -S -O2 %s 2>&1 | FileCheck -check-prefix=CHECK2-32 %s
// RUN: %clang --target=riscv32-unknown-linux-gnu -### -S -O3 %s 2>&1 | FileCheck -check-prefix=CHECK3-32 %s
// RUN: %clang --target=riscv32-unknown-linux-gnu -### -S -Os %s 2>&1 | FileCheck -check-prefix=CHECKs-32 %s
// RUN: %clang --target=riscv64-unknown-linux-gnu -### -S -O0 %s 2>&1 | FileCheck -check-prefix=CHECK0-64 %s
// RUN: %clang --target=riscv64-unknown-linux-gnu -### -S -O1 %s 2>&1 | FileCheck -check-prefix=CHECK1-64 %s
// RUN: %clang --target=riscv64-unknown-linux-gnu -### -S -O2 %s 2>&1 | FileCheck -check-prefix=CHECK2-64 %s
// RUN: %clang --target=riscv64-unknown-linux-gnu -### -S -O3 %s 2>&1 | FileCheck -check-prefix=CHECK3-64 %s
// RUN: %clang --target=riscv64-unknown-linux-gnu -### -S -Os %s 2>&1 | FileCheck -check-prefix=CHECKs-64 %s
// RUN: %clang --target=riscv64-linux-android -### -S -O0 %s 2>&1 | FileCheck -check-prefix=CHECK-ANDROID %s
// RUN: %clang --target=riscv64-linux-android -### -S -O1 %s 2>&1 | FileCheck -check-prefix=CHECK-ANDROID %s
// RUN: %clang --target=riscv64-linux-android -### -S -Os %s 2>&1 | FileCheck -check-prefix=CHECK-ANDROID %s
// RUN: %clang --target=loongarch32 -### -S -O0 %s -o %t.s 2>&1 | FileCheck -check-prefix=CHECK0-32 %s
// RUN: %clang --target=loongarch32 -### -S -O1 %s -o %t.s 2>&1 | FileCheck -check-prefix=CHECK1-32 %s
// RUN: %clang --target=loongarch32 -### -S -O2 %s -o %t.s 2>&1 | FileCheck -check-prefix=CHECK2-32 %s
// RUN: %clang --target=loongarch32 -### -S -O3 %s -o %t.s 2>&1 | FileCheck -check-prefix=CHECK3-32 %s
// RUN: %clang --target=loongarch32 -### -S -Os %s -o %t.s 2>&1 | FileCheck -check-prefix=CHECKs-32 %s
// RUN: %clang --target=loongarch64 -### -S -O0 %s -o %t.s 2>&1 | FileCheck -check-prefix=CHECK0-64 %s
// RUN: %clang --target=loongarch64 -### -S -O1 %s -o %t.s 2>&1 | FileCheck -check-prefix=CHECK1-64 %s
// RUN: %clang --target=loongarch64 -### -S -O2 %s -o %t.s 2>&1 | FileCheck -check-prefix=CHECK2-64 %s
// RUN: %clang --target=loongarch64 -### -S -O3 %s -o %t.s 2>&1 | FileCheck -check-prefix=CHECK3-64 %s
// RUN: %clang --target=loongarch64 -### -S -Os %s -o %t.s 2>&1 | FileCheck -check-prefix=CHECKs-64 %s
// RUN: %clang --target=armv7-apple-macho -### -S %s -o %t.s 2>&1 | FileCheck -check-prefix=CHECK-MACHO-32 %s
// CHECK0-32: -mframe-pointer=all
// CHECK1-32-NOT: -mframe-pointer=all
// CHECK2-32-NOT: -mframe-pointer=all
// CHECK3-32-NOT: -mframe-pointer=all
// CHECKs-32-NOT: -mframe-pointer=all
// CHECK-MACHO-32: -mframe-pointer=non-leaf
// CHECK0-64: -mframe-pointer=all
// CHECK1-64-NOT: -mframe-pointer=all
// CHECK2-64-NOT: -mframe-pointer=all
// CHECK3-64-NOT: -mframe-pointer=all
// CHECKs-64-NOT: -mframe-pointer=all
// CHECK-MACHO-64: -mframe-pointer=all
// CHECK-ANDROID: -mframe-pointer=non-leaf
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