[ARMv8] Prevent generation of deprecated IT blocks on ARMv8 in Thumb mode.

[oota-llvm.git] / test / CodeGen / Thumb2 / thumb2-cmp.ll

diff --git a/test/CodeGen/Thumb2/thumb2-cmp.ll b/test/CodeGen/Thumb2/thumb2-cmp.ll
index 56312aa490b8314ed13022f1ff0ff25ff6ec07b6..87413444ca3bf9e161771eddf13391334250500e 100644 (file)
--- a/test/CodeGen/Thumb2/thumb2-cmp.ll
+++ b/test/CodeGen/Thumb2/thumb2-cmp.ll
@@ -1,31 +1,58 @@
-; RUN: llvm-as < %s | llc -march=thumb -mattr=+thumb2 | grep "cmp "  | grep {#187\\|#11141290\\|#3422604288\\|#1114112\\|#3722304989} | Count 5
+; RUN: llc < %s -march=thumb -mattr=+thumb2 | FileCheck %s
+
+; These tests would be improved by 'movs r0, #0' being rematerialized below the
+; test as 'mov.w r0, #0'.
 
 ; 0x000000bb = 187
 define i1 @f1(i32 %a) {
+; CHECK-LABEL: f1:
+; CHECK: cmp {{.*}}, #187
     %tmp = icmp ne i32 %a, 187
     ret i1 %tmp
 }
 
 ; 0x00aa00aa = 11141290
 define i1 @f2(i32 %a) {
+; CHECK-LABEL: f2:
+; CHECK: cmp.w {{.*}}, #11141290
     %tmp = icmp eq i32 %a, 11141290 
     ret i1 %tmp
 }
 
 ; 0xcc00cc00 = 3422604288
 define i1 @f3(i32 %a) {
+; CHECK-LABEL: f3:
+; CHECK: cmp.w {{.*}}, #-872363008
     %tmp = icmp ne i32 %a, 3422604288
     ret i1 %tmp
 }
 
 ; 0xdddddddd = 3722304989
 define i1 @f4(i32 %a) {
+; CHECK-LABEL: f4:
+; CHECK: cmp.w {{.*}}, #-572662307
     %tmp = icmp ne i32 %a, 3722304989
     ret i1 %tmp
 }
 
 ; 0x00110000 = 1114112
 define i1 @f5(i32 %a) {
+; CHECK-LABEL: f5:
+; CHECK: cmp.w {{.*}}, #1114112
     %tmp = icmp eq i32 %a, 1114112
     ret i1 %tmp
 }
+
+; Check that we don't do an invalid (a > b) --> !(a < b + 1) transform.
+;
+; CHECK-LABEL: f6:
+; CHECK-NOT: cmp.w {{.*}}, #-2147483648
+; CHECK: bx lr
+define i32 @f6(i32 %a) {
+    %tmp = icmp sgt i32 %a, 2147483647
+    br i1 %tmp, label %true, label %false
+true:
+    ret i32 2
+false:
+    ret i32 0
+}