8ec1161fe6
These blocks usually show up in the form of branches within inline assembly. Since it's hard to rewire them, we fully omit paths with such blocks from path cloning.
88 lines
2.8 KiB
LLVM
88 lines
2.8 KiB
LLVM
;; Tests for invalid or (partially invalid) path clonings with -basic-block-sections.
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declare void @effect(i32 zeroext)
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;; Test failed application of path cloning.
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; RUN: echo 'v1' > %t1
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; RUN: echo 'f foo' >> %t1
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; RUN: echo 'p 0 2 3' >> %t1
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; RUN: echo 'c 0 2.1 3.1 1' >> %t1
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; RUN: llc < %s -mtriple=x86_64-pc-linux -O0 -function-sections -basic-block-sections=%t1 2> %t1.err | FileCheck %s
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; RUN: FileCheck %s --check-prefixes=WARN1 < %t1.err
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;; Test that valid clonings are applied correctly, even if invalid clonings exist.
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; RUN: echo 'v1' > %t2
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; RUN: echo 'f foo' >> %t2
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; RUN: echo 'p 0 2 3' >> %t2
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; RUN: echo 'p 0 1 2 3' >> %t2
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; RUN: echo 'c 0 1.1 2.2 3.2 2.1 3.1 1' >> %t2
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; RUN: llc < %s -mtriple=x86_64-pc-linux -O0 -function-sections -basic-block-sections=%t2 2> %t2.err | FileCheck %s --check-prefixes=PATH
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; RUN: FileCheck %s --check-prefixes=WARN1 < %t2.err
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; RUN: echo 'v1' > %t3
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; RUN: echo 'f foo' >> %t3
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; RUN: echo 'p 0 100' >> %t3
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; RUN: echo 'c 0 100.1 1' >> %t3
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; RUN: llc < %s -mtriple=x86_64-pc-linux -O0 -function-sections -basic-block-sections=%t3 2> %t3.err | FileCheck %s
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; RUN: FileCheck %s --check-prefixes=WARN2 < %t3.err
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; RUN: echo 'v1' > %t4
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; RUN: echo 'f foo' >> %t4
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; RUN: echo 'p 1 6' >> %t4
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; RUN: echo 'c 0 1 6.1' >> %t4
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; RUN: llc < %s -mtriple=x86_64-pc-linux -O0 -function-sections -basic-block-sections=%t4 2> %t4.err | FileCheck %s
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; RUN: FileCheck %s --check-prefixes=WARN3 < %t4.err
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define void @foo(i1 %a, i1 %b, i1 %c, i1 %d) {
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b0:
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call void @effect(i32 0)
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br i1 %a, label %b1, label %b3
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b1: ; preds = %b0
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call void @effect(i32 1)
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br i1 %b, label %b2, label %b6
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b2: ; preds = %b1
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call void @effect(i32 2)
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br label %b3
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b3: ; preds = %b0, %b2
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call void @effect(i32 3)
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br i1 %c, label %b4, label %b5
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b4: ; preds = %b3
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call void @effect(i32 4)
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callbr void asm sideeffect "je ${0:l}", "!i,~{dirflag},~{fpsr},~{flags}"()
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to label %b5 [label %b6]
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b5: ; preds = %b3, %b4
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call void @effect(i32 5)
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ret void
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b6: ; preds = %b1, %b4
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call void @effect(i32 6)
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ret void
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cold:
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call void @effect(i32 6) ; preds = %b4
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ret void
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}
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; CHECK: .section .text.foo,"ax",@progbits
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; CHECK: foo:
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; CHECK: # %bb.0: # %b0
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; CHECK: je .LBB0_3
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; PATH: # %bb.7: # %b1
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; PATH: # %bb.8: # %b2
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; PATH: jne .LBB0_4
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; CHECK: # %bb.1: # %b1
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; CHECK: jne foo.cold
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; CHECK: foo.cold: # %b2
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;; Check the warnings
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; WARN1: warning: block #2 is not a successor of block #0 in function foo
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; WARN2: warning: no block with id 100 in function foo
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; WARN3: warning: block #6 has its machine block address taken in function foo
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