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1; Tests that InstrEmitter::EmitMachineNode correctly sets predecessors and2; successors.3 4; RUN: llc -stop-after=finalize-isel -print-after=finalize-isel -mtriple=i686-- < %s 2>&1 | FileCheck %s5 6; The block containting the INLINEASM_BR should have a fallthrough and its7; indirect targets as its successors. Fallthrough should have 100% branch weight,8; while the indirect targets have 0%.9; CHECK: bb.0 (%ir-block.2):10; CHECK-NEXT: successors: %bb.1(0x80000000), %bb.4(0x00000000); %bb.1(100.00%), %bb.4(0.00%)11 12; The fallthrough is a block containing a second INLINEASM_BR. Check it has two successors,13; and the the probability for fallthrough is 100%.14; CHECK: bb.1 (%ir-block.4):15; CHECK-NEXT: predecessors: %bb.016; CHECK-NEXT: successors: %bb.3(0x80000000), %bb.2(0x00000000); %bb.3(100.00%), %bb.2(0.00%)17 18; Check the second INLINEASM_BR target block is preceded by the block with the19; second INLINEASM_BR.20; CHECK: bb.2 (%ir-block.7, inlineasm-br-indirect-target):21; CHECK-NEXT: predecessors: %bb.122 23; Check the first INLINEASM_BR target block is predecessed by the block with24; the first INLINEASM_BR.25; CHECK: bb.4 (%ir-block.12, inlineasm-br-indirect-target):26; CHECK-NEXT: predecessors: %bb.027 28@.str = private unnamed_addr constant [26 x i8] c"inline asm#1 returned %d\0A\00", align 129@.str.2 = private unnamed_addr constant [26 x i8] c"inline asm#2 returned %d\0A\00", align 130@str = private unnamed_addr constant [30 x i8] c"inline asm#1 caused exception\00", align 131@str.4 = private unnamed_addr constant [30 x i8] c"inline asm#2 caused exception\00", align 132 33; Function Attrs: nounwind uwtable34define dso_local i32 @main(i32 %0, ptr nocapture readnone %1) #0 {35 %3 = callbr i32 asm "jmp ${1:l}", "=r,!i,~{dirflag},~{fpsr},~{flags}"() #336 to label %4 [label %11]37 384: ; preds = %239 %5 = tail call i32 (ptr, ...) @printf(ptr nonnull dereferenceable(1) @.str, i32 %3)40 %6 = callbr i32 asm "jmp ${1:l}", "=r,!i,~{dirflag},~{fpsr},~{flags}"() #341 to label %9 [label %7]42 437: ; preds = %444 %8 = tail call i32 @puts(ptr nonnull dereferenceable(1) @str.4)45 br label %1346 479: ; preds = %448 %10 = tail call i32 (ptr, ...) @printf(ptr nonnull dereferenceable(1) @.str.2, i32 %6)49 br label %1350 5111: ; preds = %252 %12 = tail call i32 @puts(ptr nonnull dereferenceable(1) @str)53 br label %1354 5513: ; preds = %11, %9, %756 %14 = phi i32 [ 1, %7 ], [ 0, %9 ], [ 1, %11 ]57 ret i32 %1458}59 60declare dso_local i32 @printf(ptr nocapture readonly, ...) local_unnamed_addr #161declare i32 @puts(ptr nocapture readonly) local_unnamed_addr #262