; Tests that InstrEmitter::EmitMachineNode correctly sets predecessors and
; successors.
; RUN: llc -stop-after=finalize-isel -print-after=finalize-isel -mtriple=i686-- < %s 2>&1 | FileCheck %s
; The block containting the INLINEASM_BR should have a fallthrough and its
; indirect targets as its successors. Fallthrough should have 100% branch weight,
; while the indirect targets have 0%.
; CHECK: bb.0 (%ir-block.2):
; CHECK-NEXT: successors: %bb.1(0x80000000), %bb.4(0x00000000); %bb.1(100.00%), %bb.4(0.00%)
; The fallthrough is a block containing a second INLINEASM_BR. Check it has two successors,
; and the the probability for fallthrough is 100%.
; CHECK: bb.1 (%ir-block.4):
; CHECK-NEXT: predecessors: %bb.0
; CHECK-NEXT: successors: %bb.3(0x80000000), %bb.2(0x00000000); %bb.3(100.00%), %bb.2(0.00%)
; Check the second INLINEASM_BR target block is preceded by the block with the
; second INLINEASM_BR.
; CHECK: bb.2 (%ir-block.7, machine-block-address-taken, inlineasm-br-indirect-target):
; CHECK-NEXT: predecessors: %bb.1
; Check the first INLINEASM_BR target block is predecessed by the block with
; the first INLINEASM_BR.
; CHECK: bb.4 (%ir-block.12, machine-block-address-taken, inlineasm-br-indirect-target):
; CHECK-NEXT: predecessors: %bb.0
@.str = private unnamed_addr constant [26 x i8] c"inline asm#1 returned %d\0A\00", align 1
@.str.2 = private unnamed_addr constant [26 x i8] c"inline asm#2 returned %d\0A\00", align 1
@str = private unnamed_addr constant [30 x i8] c"inline asm#1 caused exception\00", align 1
@str.4 = private unnamed_addr constant [30 x i8] c"inline asm#2 caused exception\00", align 1
; Function Attrs: nounwind uwtable
define dso_local i32 @main(i32 %0, ptr nocapture readnone %1) #0 {
%3 = callbr i32 asm "jmp ${1:l}", "=r,!i,~{dirflag},~{fpsr},~{flags}"() #3
to label %4 [label %11]
4: ; preds = %2
%5 = tail call i32 (ptr, ...) @printf(ptr nonnull dereferenceable(1) @.str, i32 %3)
%6 = callbr i32 asm "jmp ${1:l}", "=r,!i,~{dirflag},~{fpsr},~{flags}"() #3
to label %9 [label %7]
7: ; preds = %4
%8 = tail call i32 @puts(ptr nonnull dereferenceable(1) @str.4)
br label %13
9: ; preds = %4
%10 = tail call i32 (ptr, ...) @printf(ptr nonnull dereferenceable(1) @.str.2, i32 %6)
br label %13
11: ; preds = %2
%12 = tail call i32 @puts(ptr nonnull dereferenceable(1) @str)
br label %13
13: ; preds = %11, %9, %7
%14 = phi i32 [ 1, %7 ], [ 0, %9 ], [ 1, %11 ]
ret i32 %14
}
declare dso_local i32 @printf(ptr nocapture readonly, ...) local_unnamed_addr #1
declare i32 @puts(ptr nocapture readonly) local_unnamed_addr #2
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