Temporarily revert "Subtract isn't commutative, fix this for MMX psub."

[oota-llvm.git] / test / CodeGen / ARM / call-tc.ll

diff --git a/test/CodeGen/ARM/call-tc.ll b/test/CodeGen/ARM/call-tc.ll
index c460f7a5bd02082f1a2a5695b99d95c4441fc7f0..c7e17ea353f38272435da7a4d0fa754597714051 100644 (file)
--- a/test/CodeGen/ARM/call-tc.ll
+++ b/test/CodeGen/ARM/call-tc.ll
@@ -1,6 +1,10 @@
-; RUN: llc < %s -mtriple=armv6-apple-darwin -mattr=+vfp2 -arm-tail-calls | FileCheck %s -check-prefix=CHECKV6
+; 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-darwin -arm-tail-calls | FileCheck %s -check-prefix=CHECKT2D
+; 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]
 
@@ -15,11 +19,11 @@ define void @t1() {
 
 define void @t2() {
 ; CHECKV6: t2:
-; CHECKV6: bx r0 @ TAILCALL
+; CHECKV6: bx r0
 ; CHECKT2D: t2:
 ; CHECKT2D: ldr
 ; CHECKT2D-NEXT: ldr
-; CHECKT2D-NEXT: bx r0 @ TAILCALL
+; CHECKT2D-NEXT: bx r0
         %tmp = load i32 ()** @t         ; <i32 ()*> [#uses=1]
         %tmp.upgrd.2 = tail call i32 %tmp( )            ; <i32> [#uses=0]
         ret void
@@ -27,11 +31,11 @@ define void @t2() {
 
 define void @t3() {
 ; CHECKV6: t3:
-; CHECKV6: b _t2  @ TAILCALL
+; CHECKV6: b _t2
 ; CHECKELF: t3:
-; CHECKELF: b t2(PLT) @ TAILCALL
+; CHECKELF: b t2(PLT)
 ; CHECKT2D: t3:
-; CHECKT2D: b.w _t2  @ TAILCALL
+; CHECKT2D: b.w _t2
 
         tail call void @t2( )            ; <i32> [#uses=0]
         ret void
@@ -41,9 +45,9 @@ define void @t3() {
 define double @t4(double %a) nounwind readonly ssp {
 entry:
 ; CHECKV6: t4:
-; CHECKV6: b _sin @ TAILCALL
+; CHECKV6: b _sin
 ; CHECKELF: t4:
-; CHECKELF: b sin(PLT) @ TAILCALL
+; CHECKELF: b sin(PLT)
   %0 = tail call double @sin(double %a) nounwind readonly ; <double> [#uses=1]
   ret double %0
 }
@@ -51,9 +55,9 @@ entry:
 define float @t5(float %a) nounwind readonly ssp {
 entry:
 ; CHECKV6: t5:
-; CHECKV6: b _sinf @ TAILCALL
+; CHECKV6: b _sinf
 ; CHECKELF: t5:
-; CHECKELF: b sinf(PLT) @ TAILCALL
+; CHECKELF: b sinf(PLT)
   %0 = tail call float @sinf(float %a) nounwind readonly ; <float> [#uses=1]
   ret float %0
 }
@@ -65,9 +69,9 @@ declare double @sin(double) nounwind readonly
 define i32 @t6(i32 %a, i32 %b) nounwind readnone {
 entry:
 ; CHECKV6: t6:
-; CHECKV6: b ___divsi3 @ TAILCALL
+; CHECKV6: b ___divsi3
 ; CHECKELF: t6:
-; CHECKELF: b __aeabi_idiv(PLT) @ TAILCALL
+; CHECKELF: b __aeabi_idiv(PLT)
   %0 = sdiv i32 %a, %b
   ret i32 %0
 }
@@ -92,3 +96,86 @@ 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
+  %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
+
+; rdar://13827621
+; Correctly preserve the input chain for the tailcall node in the bitcast case,
+; otherwise the call to floorf is lost.
+define float @libcall_tc_test2(float* nocapture %a, float %b) {
+; CHECKT2D: libcall_tc_test2:
+; CHECKT2D: blx _floorf
+; CHECKT2D: b.w _truncf
+  %1 = load float* %a, align 4
+  %call = tail call float @floorf(float %1)
+  store float %call, float* %a, align 4
+  %call1 = tail call float @truncf(float %b)
+  ret float %call1
+}
+
+declare float @floorf(float) readnone
+declare float @truncf(float) readnone