forked from OSchip/llvm-project
62 lines
3.0 KiB
LLVM
62 lines
3.0 KiB
LLVM
; 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, address-taken):
|
|
; 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.11, address-taken):
|
|
; 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, i8** nocapture readnone %1) #0 {
|
|
%3 = callbr i32 asm "jmp ${1:l}", "=r,X,~{dirflag},~{fpsr},~{flags}"(i8* blockaddress(@main, %11)) #3
|
|
to label %4 [label %11]
|
|
|
|
4: ; preds = %2
|
|
%5 = tail call i32 (i8*, ...) @printf(i8* nonnull dereferenceable(1) getelementptr inbounds ([26 x i8], [26 x i8]* @.str, i64 0, i64 0), i32 %3)
|
|
%6 = callbr i32 asm "jmp ${1:l}", "=r,X,~{dirflag},~{fpsr},~{flags}"(i8* blockaddress(@main, %7)) #3
|
|
to label %9 [label %7]
|
|
|
|
7: ; preds = %4
|
|
%8 = tail call i32 @puts(i8* nonnull dereferenceable(1) getelementptr inbounds ([30 x i8], [30 x i8]* @str.4, i64 0, i64 0))
|
|
br label %13
|
|
|
|
9: ; preds = %4
|
|
%10 = tail call i32 (i8*, ...) @printf(i8* nonnull dereferenceable(1) getelementptr inbounds ([26 x i8], [26 x i8]* @.str.2, i64 0, i64 0), i32 %6)
|
|
br label %13
|
|
|
|
11: ; preds = %2
|
|
%12 = tail call i32 @puts(i8* nonnull dereferenceable(1) getelementptr inbounds ([30 x i8], [30 x i8]* @str, i64 0, i64 0))
|
|
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(i8* nocapture readonly, ...) local_unnamed_addr #1
|
|
declare i32 @puts(i8* nocapture readonly) local_unnamed_addr #2
|