df082ac45a
This is the second patch in a series of patches to enable basic block sections support. This patch adds support for: * Creating direct jumps at the end of basic blocks that have fall through instructions. * New pass, bbsections-prepare, that analyzes placement of basic blocks in sections. * Actual placing of a basic block in a unique section with special handling of exception handling blocks. * Supports placing a subset of basic blocks in a unique section. * Support for MIR serialization and deserialization with basic block sections. Parent patch : D68063 Differential Revision: https://reviews.llvm.org/D73674
34 lines
899 B
LLVM
34 lines
899 B
LLVM
; Check the basic block sections labels option
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; RUN: llc < %s -mtriple=x86_64-pc-linux -function-sections -basicblock-sections=labels | FileCheck %s -check-prefix=LINUX-LABELS
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define void @_Z3bazb(i1 zeroext) {
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%2 = alloca i8, align 1
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%3 = zext i1 %0 to i8
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store i8 %3, i8* %2, align 1
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%4 = load i8, i8* %2, align 1
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%5 = trunc i8 %4 to i1
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br i1 %5, label %6, label %8
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6: ; preds = %1
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%7 = call i32 @_Z3barv()
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br label %10
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8: ; preds = %1
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%9 = call i32 @_Z3foov()
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br label %10
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10: ; preds = %8, %6
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ret void
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}
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declare i32 @_Z3barv() #1
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declare i32 @_Z3foov() #1
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; LINUX-LABELS: .section
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; LINUX-LABELS: _Z3bazb:
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; LINUX-LABELS-NOT: .section
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; LINUX-LABELS: r.BB._Z3bazb:
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; LINUX-LABELS-NOT: .section
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; LINUX-LABELS: rr.BB._Z3bazb:
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