1 files changed, 103 insertions, 0 deletions
diff --git a/test/Transforms/InstSimplify/call.ll b/test/Transforms/InstSimplify/call.ll
new file mode 100644
index 0000000..cf2f847
--- /dev/null
+++ b/test/Transforms/InstSimplify/call.ll
@@ -0,0 +1,103 @@
+; RUN: opt < %s -instsimplify -S | FileCheck %s
+
+declare {i8, i1} @llvm.uadd.with.overflow.i8(i8 %a, i8 %b)
+
+define i1 @test_uadd1() {
+; CHECK: @test_uadd1
+  %x = call {i8, i1} @llvm.uadd.with.overflow.i8(i8 254, i8 3)
+  %overflow = extractvalue {i8, i1} %x, 1
+  ret i1 %overflow
+; CHECK-NEXT: ret i1 true
+}
+
+define i8 @test_uadd2() {
+; CHECK: @test_uadd2
+  %x = call {i8, i1} @llvm.uadd.with.overflow.i8(i8 254, i8 44)
+  %result = extractvalue {i8, i1} %x, 0
+  ret i8 %result
+; CHECK-NEXT: ret i8 42
+}
+
+declare i256 @llvm.cttz.i256(i256 %src, i1 %is_zero_undef)
+
+define i256 @test_cttz() {
+; CHECK: @test_cttz
+  %x = call i256 @llvm.cttz.i256(i256 10, i1 false)
+  ret i256 %x
+; CHECK-NEXT: ret i256 1
+}
+
+declare i256 @llvm.ctpop.i256(i256 %src)
+
+define i256 @test_ctpop() {
+; CHECK: @test_ctpop
+  %x = call i256 @llvm.ctpop.i256(i256 10)
+  ret i256 %x
+; CHECK-NEXT: ret i256 2
+}
+
+; Test a non-intrinsic that we know about as a library call.
+declare float @fabs(float %x)
+
+define float @test_fabs_libcall() {
+; CHECK: @test_fabs_libcall
+
+  %x = call float @fabs(float -42.0)
+; This is still a real function call, so instsimplify won't nuke it -- other
+; passes have to do that.
+; CHECK-NEXT: call float @fabs
+
+  ret float %x
+; CHECK-NEXT: ret float 4.2{{0+}}e+01
+}
+
+
+declare float @llvm.fabs.f32(float) nounwind readnone
+declare float @llvm.floor.f32(float) nounwind readnone
+declare float @llvm.ceil.f32(float) nounwind readnone
+declare float @llvm.trunc.f32(float) nounwind readnone
+declare float @llvm.rint.f32(float) nounwind readnone
+declare float @llvm.nearbyint.f32(float) nounwind readnone
+
+; Test idempotent intrinsics
+define float @test_idempotence(float %a) {
+; CHECK: @test_idempotence
+
+; CHECK: fabs
+; CHECK-NOT: fabs
+  %a0 = call float @llvm.fabs.f32(float %a)
+  %a1 = call float @llvm.fabs.f32(float %a0)
+
+; CHECK: floor
+; CHECK-NOT: floor
+  %b0 = call float @llvm.floor.f32(float %a)
+  %b1 = call float @llvm.floor.f32(float %b0)
+
+; CHECK: ceil
+; CHECK-NOT: ceil
+  %c0 = call float @llvm.ceil.f32(float %a)
+  %c1 = call float @llvm.ceil.f32(float %c0)
+
+; CHECK: trunc
+; CHECK-NOT: trunc
+  %d0 = call float @llvm.trunc.f32(float %a)
+  %d1 = call float @llvm.trunc.f32(float %d0)
+
+; CHECK: rint
+; CHECK-NOT: rint
+  %e0 = call float @llvm.rint.f32(float %a)
+  %e1 = call float @llvm.rint.f32(float %e0)
+
+; CHECK: nearbyint
+; CHECK-NOT: nearbyint
+  %f0 = call float @llvm.nearbyint.f32(float %a)
+  %f1 = call float @llvm.nearbyint.f32(float %f0)
+
+  %r0 = fadd float %a1, %b1
+  %r1 = fadd float %r0, %c1
+  %r2 = fadd float %r1, %d1
+  %r3 = fadd float %r2, %e1
+  %r4 = fadd float %r3, %f1
+
+  ret float %r4
+}