[SystemZ] Optimize fcmp X, 0 in cases where X is also negated

[oota-llvm.git] / test / CodeGen / SystemZ / int-cmp-09.ll

diff --git a/test/CodeGen/SystemZ/int-cmp-09.ll b/test/CodeGen/SystemZ/int-cmp-09.ll
index 06ebee250bcb166de8282c25fac6f71381067d71..0eb8c6688c0cc6d55581809cc65bb8e02715163b 100644 (file)
--- a/test/CodeGen/SystemZ/int-cmp-09.ll
+++ b/test/CodeGen/SystemZ/int-cmp-09.ll
@@ -4,9 +4,8 @@
 
 ; Check comparisons with 0.
 define double @f1(double %a, double %b, i32 %i1) {
-; CHECK: f1:
-; CHECK: chi %r2, 0
-; CHECK-NEXT: jl
+; CHECK-LABEL: f1:
+; CHECK: cijl %r2, 0
 ; CHECK: ldr %f0, %f2
 ; CHECK: br %r14
   %cond = icmp slt i32 %i1, 0
@@ -14,21 +13,43 @@ define double @f1(double %a, double %b, i32 %i1) {
   ret double %res
 }
 
-; Check comparisons with 1.
+; Check comparisons with 2.
 define double @f2(double %a, double %b, i32 %i1) {
-; CHECK: f2:
-; CHECK: chi %r2, 1
+; CHECK-LABEL: f2:
+; CHECK: cijl %r2, 2
+; CHECK: ldr %f0, %f2
+; CHECK: br %r14
+  %cond = icmp slt i32 %i1, 2
+  %res = select i1 %cond, double %a, double %b
+  ret double %res
+}
+
+; Check the high end of the CIJ range.
+define double @f3(double %a, double %b, i32 %i1) {
+; CHECK-LABEL: f3:
+; CHECK: cijl %r2, 127
+; CHECK: ldr %f0, %f2
+; CHECK: br %r14
+  %cond = icmp slt i32 %i1, 127
+  %res = select i1 %cond, double %a, double %b
+  ret double %res
+}
+
+; Check the next value up, which must use CHI instead.
+define double @f4(double %a, double %b, i32 %i1) {
+; CHECK-LABEL: f4:
+; CHECK: chi %r2, 128
 ; CHECK-NEXT: jl
 ; CHECK: ldr %f0, %f2
 ; CHECK: br %r14
-  %cond = icmp slt i32 %i1, 1
+  %cond = icmp slt i32 %i1, 128
   %res = select i1 %cond, double %a, double %b
   ret double %res
 }
 
 ; Check the high end of the CHI range.
-define double @f3(double %a, double %b, i32 %i1) {
-; CHECK: f3:
+define double @f5(double %a, double %b, i32 %i1) {
+; CHECK-LABEL: f5:
 ; CHECK: chi %r2, 32767
 ; CHECK-NEXT: jl
 ; CHECK: ldr %f0, %f2
@@ -39,8 +60,8 @@ define double @f3(double %a, double %b, i32 %i1) {
 }
 
 ; Check the next value up, which must use CFI.
-define double @f4(double %a, double %b, i32 %i1) {
-; CHECK: f4:
+define double @f6(double %a, double %b, i32 %i1) {
+; CHECK-LABEL: f6:
 ; CHECK: cfi %r2, 32768
 ; CHECK-NEXT: jl
 ; CHECK: ldr %f0, %f2
@@ -51,8 +72,8 @@ define double @f4(double %a, double %b, i32 %i1) {
 }
 
 ; Check the high end of the signed 32-bit range.
-define double @f5(double %a, double %b, i32 %i1) {
-; CHECK: f5:
+define double @f7(double %a, double %b, i32 %i1) {
+; CHECK-LABEL: f7:
 ; CHECK: cfi %r2, 2147483647
 ; CHECK-NEXT: je
 ; CHECK: ldr %f0, %f2
@@ -63,8 +84,8 @@ define double @f5(double %a, double %b, i32 %i1) {
 }
 
 ; Check the next value up, which should be treated as a negative value.
-define double @f6(double %a, double %b, i32 %i1) {
-; CHECK: f6:
+define double @f8(double %a, double %b, i32 %i1) {
+; CHECK-LABEL: f8:
 ; CHECK: cfi %r2, -2147483648
 ; CHECK-NEXT: je
 ; CHECK: ldr %f0, %f2
@@ -74,11 +95,10 @@ define double @f6(double %a, double %b, i32 %i1) {
   ret double %res
 }
 
-; Check the high end of the negative CHI range.
-define double @f7(double %a, double %b, i32 %i1) {
-; CHECK: f7:
-; CHECK: chi %r2, -1
-; CHECK-NEXT: jl
+; Check the high end of the negative CIJ range.
+define double @f9(double %a, double %b, i32 %i1) {
+; CHECK-LABEL: f9:
+; CHECK: cijl %r2, -1
 ; CHECK: ldr %f0, %f2
 ; CHECK: br %r14
   %cond = icmp slt i32 %i1, -1
@@ -86,9 +106,32 @@ define double @f7(double %a, double %b, i32 %i1) {
   ret double %res
 }
 
+; Check the low end of the CIJ range.
+define double @f10(double %a, double %b, i32 %i1) {
+; CHECK-LABEL: f10:
+; CHECK: cijl %r2, -128
+; CHECK: ldr %f0, %f2
+; CHECK: br %r14
+  %cond = icmp slt i32 %i1, -128
+  %res = select i1 %cond, double %a, double %b
+  ret double %res
+}
+
+; Check the next value down, which must use CHI instead.
+define double @f11(double %a, double %b, i32 %i1) {
+; CHECK-LABEL: f11:
+; CHECK: chi %r2, -129
+; CHECK-NEXT: jl
+; CHECK: ldr %f0, %f2
+; CHECK: br %r14
+  %cond = icmp slt i32 %i1, -129
+  %res = select i1 %cond, double %a, double %b
+  ret double %res
+}
+
 ; Check the low end of the CHI range.
-define double @f8(double %a, double %b, i32 %i1) {
-; CHECK: f8:
+define double @f12(double %a, double %b, i32 %i1) {
+; CHECK-LABEL: f12:
 ; CHECK: chi %r2, -32768
 ; CHECK-NEXT: jl
 ; CHECK: ldr %f0, %f2
@@ -99,8 +142,8 @@ define double @f8(double %a, double %b, i32 %i1) {
 }
 
 ; Check the next value down, which must use CFI instead.
-define double @f9(double %a, double %b, i32 %i1) {
-; CHECK: f9:
+define double @f13(double %a, double %b, i32 %i1) {
+; CHECK-LABEL: f13:
 ; CHECK: cfi %r2, -32769
 ; CHECK-NEXT: jl
 ; CHECK: ldr %f0, %f2
@@ -111,8 +154,8 @@ define double @f9(double %a, double %b, i32 %i1) {
 }
 
 ; Check the low end of the signed 32-bit range.
-define double @f10(double %a, double %b, i32 %i1) {
-; CHECK: f10:
+define double @f14(double %a, double %b, i32 %i1) {
+; CHECK-LABEL: f14:
 ; CHECK: cfi %r2, -2147483648
 ; CHECK-NEXT: je
 ; CHECK: ldr %f0, %f2
@@ -123,8 +166,8 @@ define double @f10(double %a, double %b, i32 %i1) {
 }
 
 ; Check the next value down, which should be treated as a positive value.
-define double @f11(double %a, double %b, i32 %i1) {
-; CHECK: f11:
+define double @f15(double %a, double %b, i32 %i1) {
+; CHECK-LABEL: f15:
 ; CHECK: cfi %r2, 2147483647
 ; CHECK-NEXT: je
 ; CHECK: ldr %f0, %f2
@@ -133,3 +176,47 @@ define double @f11(double %a, double %b, i32 %i1) {
   %res = select i1 %cond, double %a, double %b
   ret double %res
 }
+
+; Check that < 1 becomes <= 0.
+define double @f16(double %a, double %b, i32 %i1) {
+; CHECK-LABEL: f16:
+; CHECK: cijle %r2, 0
+; CHECK: ldr %f0, %f2
+; CHECK: br %r14
+  %cond = icmp slt i32 %i1, 1
+  %res = select i1 %cond, double %a, double %b
+  ret double %res
+}
+
+; Check that >= 1 becomes > 0.
+define double @f17(double %a, double %b, i32 %i1) {
+; CHECK-LABEL: f17:
+; CHECK: cijh %r2, 0
+; CHECK: ldr %f0, %f2
+; CHECK: br %r14
+  %cond = icmp sge i32 %i1, 1
+  %res = select i1 %cond, double %a, double %b
+  ret double %res
+}
+
+; Check that > -1 becomes >= 0.
+define double @f18(double %a, double %b, i32 %i1) {
+; CHECK-LABEL: f18:
+; CHECK: cijhe %r2, 0
+; CHECK: ldr %f0, %f2
+; CHECK: br %r14
+  %cond = icmp sgt i32 %i1, -1
+  %res = select i1 %cond, double %a, double %b
+  ret double %res
+}
+
+; Check that <= -1 becomes < 0.
+define double @f19(double %a, double %b, i32 %i1) {
+; CHECK-LABEL: f19:
+; CHECK: cijl %r2, 0
+; CHECK: ldr %f0, %f2
+; CHECK: br %r14
+  %cond = icmp sle i32 %i1, -1
+  %res = select i1 %cond, double %a, double %b
+  ret double %res
+}