-; RUN: llc < %s -march=arm | FileCheck %s -check-prefix=CHECKV4
-; RUN: llc < %s -march=arm -mattr=+v5t | FileCheck %s -check-prefix=CHECKV5
-; RUN: llc < %s -march=arm -mtriple=arm-linux-gnueabi\
-; RUN: -relocation-model=pic | FileCheck %s -check-prefix=CHECKELF
+; RUN: llc < %s -mtriple=armv6-apple-ios -mattr=+vfp2 -arm-tail-calls | FileCheck %s -check-prefix=CHECKV6
+; RUN: llc < %s -mtriple=armv6-linux-gnueabi -relocation-model=pic -mattr=+vfp2 -arm-tail-calls | FileCheck %s -check-prefix=CHECKELF
+; RUN: llc < %s -mtriple=thumbv7-apple-ios -arm-tail-calls | FileCheck %s -check-prefix=CHECKT2D
+; RUN: llc < %s -mtriple=thumbv7-apple-ios5.0 | FileCheck %s -check-prefix=CHECKT2D
+
+; Enable tailcall optimization for iOS 5.0
+; rdar://9120031
@t = weak global i32 ()* null ; <i32 ()**> [#uses=1]
define void @t1() {
; CHECKELF: t1:
-; CHECKELF: PLT
+; CHECKELF: bl g(PLT)
call void @g( i32 1, i32 2, i32 3, i32 4 )
ret void
}
define void @t2() {
-; CHECKV4: t2:
-; CHECKV4: bx r0 @ TAILCALL
-; CHECKV5: t2:
-; CHECKV5: bx r0 @ TAILCALL
+; CHECKV6: t2:
+; CHECKV6: bx r0
+; CHECKT2D: t2:
+; CHECKT2D: ldr
+; CHECKT2D-NEXT: ldr
+; CHECKT2D-NEXT: bx r0
%tmp = load i32 ()** @t ; <i32 ()*> [#uses=1]
%tmp.upgrd.2 = tail call i32 %tmp( ) ; <i32> [#uses=0]
ret void
}
-define i32* @t3(i32, i32, i32*, i32*, i32*) nounwind {
-; CHECKV4: t3:
-; CHECKV4: bx r{{.*}}
-BB0:
- %5 = inttoptr i32 %0 to i32* ; <i32*> [#uses=1]
- %t35 = volatile load i32* %5 ; <i32> [#uses=1]
- %6 = inttoptr i32 %t35 to i32** ; <i32**> [#uses=1]
- %7 = getelementptr i32** %6, i32 86 ; <i32**> [#uses=1]
- %8 = load i32** %7 ; <i32*> [#uses=1]
- %9 = bitcast i32* %8 to i32* (i32, i32*, i32, i32*, i32*, i32*)* ; <i32* (i32, i32*, i32, i32*, i32*, i32*)*> [#uses=1]
- %10 = call i32* %9(i32 %0, i32* null, i32 %1, i32* %2, i32* %3, i32* %4) ; <i32*> [#uses=1]
- ret i32* %10
+define void @t3() {
+; CHECKV6: t3:
+; CHECKV6: b _t2
+; CHECKELF: t3:
+; CHECKELF: b t2(PLT)
+; CHECKT2D: t3:
+; CHECKT2D: b.w _t2
+
+ tail call void @t2( ) ; <i32> [#uses=0]
+ ret void
+}
+
+; Sibcall optimization of expanded libcalls. rdar://8707777
+define double @t4(double %a) nounwind readonly ssp {
+entry:
+; CHECKV6: t4:
+; CHECKV6: b _sin
+; CHECKELF: t4:
+; CHECKELF: b sin(PLT)
+ %0 = tail call double @sin(double %a) nounwind readonly ; <double> [#uses=1]
+ ret double %0
+}
+
+define float @t5(float %a) nounwind readonly ssp {
+entry:
+; CHECKV6: t5:
+; CHECKV6: b _sinf
+; CHECKELF: t5:
+; CHECKELF: b sinf(PLT)
+ %0 = tail call float @sinf(float %a) nounwind readonly ; <float> [#uses=1]
+ ret float %0
+}
+
+declare float @sinf(float) nounwind readonly
+
+declare double @sin(double) nounwind readonly
+
+define i32 @t6(i32 %a, i32 %b) nounwind readnone {
+entry:
+; CHECKV6: t6:
+; CHECKV6: b ___divsi3
+; CHECKELF: t6:
+; CHECKELF: b __aeabi_idiv(PLT)
+ %0 = sdiv i32 %a, %b
+ ret i32 %0
+}
+
+; Make sure the tail call instruction isn't deleted
+; rdar://8309338
+declare void @foo() nounwind
+
+define void @t7() nounwind {
+entry:
+; CHECKT2D: t7:
+; CHECKT2D: blxeq _foo
+; CHECKT2D-NEXT: pop.w
+; CHECKT2D-NEXT: b.w _foo
+ br i1 undef, label %bb, label %bb1.lr.ph
+
+bb1.lr.ph:
+ tail call void @foo() nounwind
+ unreachable
+
+bb:
+ tail call void @foo() nounwind
+ ret void
+}
+
+; Make sure codegenprep is duplicating ret instructions to enable tail calls.
+; rdar://11140249
+define i32 @t8(i32 %x) nounwind ssp {
+entry:
+; CHECKT2D: t8:
+; CHECKT2D-NOT: push
+; CHECKT2D-NOT
+ %and = and i32 %x, 1
+ %tobool = icmp eq i32 %and, 0
+ br i1 %tobool, label %if.end, label %if.then
+
+if.then: ; preds = %entry
+; CHECKT2D: bne.w _a
+ %call = tail call i32 @a(i32 %x) nounwind
+ br label %return
+
+if.end: ; preds = %entry
+ %and1 = and i32 %x, 2
+ %tobool2 = icmp eq i32 %and1, 0
+ br i1 %tobool2, label %if.end5, label %if.then3
+
+if.then3: ; preds = %if.end
+; CHECKT2D: bne.w _b
+ %call4 = tail call i32 @b(i32 %x) nounwind
+ br label %return
+
+if.end5: ; preds = %if.end
+; CHECKT2D: b.w _c
+ %call6 = tail call i32 @c(i32 %x) nounwind
+ br label %return
+
+return: ; preds = %if.end5, %if.then3, %if.then
+ %retval.0 = phi i32 [ %call, %if.then ], [ %call4, %if.then3 ], [ %call6, %if.end5 ]
+ ret i32 %retval.0
+}
+
+declare i32 @a(i32)
+
+declare i32 @b(i32)
+
+declare i32 @c(i32)
+
+; PR12419
+; rdar://11195178
+; Use the correct input chain for the tailcall node or else the call to
+; _ZN9MutexLockD1Ev would be lost.
+%class.MutexLock = type { i8 }
+
+@x = external global i32, align 4
+
+define i32 @t9() nounwind {
+; CHECKT2D: t9:
+; CHECKT2D: blx __ZN9MutexLockC1Ev
+; CHECKT2D: blx __ZN9MutexLockD1Ev
+; CHECKT2D: b.w ___divsi3
+ %lock = alloca %class.MutexLock, align 1
+ %1 = call %class.MutexLock* @_ZN9MutexLockC1Ev(%class.MutexLock* %lock)
+ %2 = load i32* @x, align 4
+ %3 = sdiv i32 1000, %2
+ %4 = call %class.MutexLock* @_ZN9MutexLockD1Ev(%class.MutexLock* %lock)
+ ret i32 %3
}
+
+declare %class.MutexLock* @_ZN9MutexLockC1Ev(%class.MutexLock*) unnamed_addr nounwind align 2
+
+declare %class.MutexLock* @_ZN9MutexLockD1Ev(%class.MutexLock*) unnamed_addr nounwind align 2
projects / oota-llvm.git / blobdiff