Fix assert when emitting llvm.pow.f86.

This occurred due to introducing the invalid i64 type after type
legalization had already finished, in an attempt to workaround bitcast
f64 -> v2i32 not doing constant folding.

The *right* thing is to actually fix bitcast, but that has other
complications. So, for now, just get rid of the broken workaround, and
check in a test-case showing that it doesn't crash, with TODOs for
emitting proper code.

llvm-svn: 249908

1 files changed, 41 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/SPARC/float-constants.ll b/llvm/test/CodeGen/SPARC/float-constants.ll
new file mode 100644
index 00000000000..b3686ebdf44
--- /dev/null
+++ b/llvm/test/CodeGen/SPARC/float-constants.ll
@@ -0,0 +1,41 @@
+; RUN: llc < %s -march=sparc | FileCheck %s
+
+; TODO: actually fix the codegen to be optimal. At least we don't
+; crash for now, though...
+
+;; Bitcast should not do a runtime conversion, but rather emit a
+;; constant into integer registers directly.
+
+; CHECK-LABEL: bitcast:
+; TODO-CHECK: sethi 1049856, %o0
+; TODO-CHECK: sethi 0, %o1
+define <2 x i32> @bitcast() {
+  %1 = bitcast double 5.0 to <2 x i32>
+  ret <2 x i32> %1
+}
+
+;; Same thing for a call using a double (which gets passed in integer
+;; registers)
+
+; CHECK-LABEL: test_call
+; TODO-CHECK: sethi 1049856, %o0
+; TODO-CHECK: sethi 0, %o1
+declare void @a(double)
+define void @test_call() {
+  call void @a(double 5.0)
+  ret void
+}
+
+;; And for a libcall emitted from the pow intrinsic.  (libcall
+;; emission happens after SelectionDAG type legalization, so is a bit
+;; different than a normal function call. This was crashing before,
+;; due to an earlier broken workaround for this issue.)
+
+; CHECK-LABEL: test_intrins_call
+; TODO-CHECK: sethi 1049856, %o0
+; TODO-CHECK: sethi 0, %o1
+declare double @llvm.pow.f64(double, double)
+define double @test_intrins_call() {
+  %1 = call double @llvm.pow.f64(double 2.0, double 2.0)
+  ret double %1
+}