derek.holloway
7502bf64a4
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32 lines
1.1 KiB
C
32 lines
1.1 KiB
C
// Check that llvm-bolt pushes code to higher addresses under
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// --hot-functions-at-end when rewriting code in-place.
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// REQUIRES: system-linux
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// RUN: %clang %cflags -O0 %s -o %t -no-pie -Wl,-q -falign-functions=64 \
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// RUN: -nostartfiles -nostdlib -ffreestanding
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// RUN: link_fdata %s %t %t.fdata
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// RUN: llvm-bolt %t -o %t.bolt --data %t.fdata --use-old-text \
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// RUN: --align-functions=1 --no-huge-pages --align-text=1 --use-gnu-stack \
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// RUN: --hot-functions-at-end | FileCheck %s --check-prefix=CHECK-BOLT
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// RUN: llvm-readelf --sections %t.bolt | FileCheck %s
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// CHECK-BOLT: using original .text for new code with 0x1 alignment at {{.*}}
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// As .text is pushed higher, preceding .bolt.org.text should have non-zero
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// size.
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// CHECK: .bolt.org.text PROGBITS
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// CHECK-NOT: {{ 000000 }}
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// CHECK-SAME: AX
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// CHECK-NEXT: .text.cold PROGBITS
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// CHECK-NEXT: .text PROGBITS
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// FDATA: 0 [unknown] 0 1 foo 0 0 1
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int foo() { return 0; }
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// Cold function.
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int bar() { return 42; }
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// FDATA: 0 [unknown] 0 1 main 0 0 1
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int main(int argc, char **argv) { return argc ? foo() : bar(); }
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