Support vector casts in more places, fixing a variety of assertion

failures.

To support this, add some utility functions to Type to help support
vector/scalar-independent code. Change ConstantInt::get and
ConstantFP::get to support vector types, and add an overload to
ConstantInt::get that uses a static IntegerType type, for
convenience.

Introduce a new getConstant method for ScalarEvolution, to simplify
common use cases.

llvm-svn: 73431

2 files changed, 92 insertions, 0 deletions

diff --git a/llvm/test/Feature/vector-cast-constant-exprs.ll b/llvm/test/Feature/vector-cast-constant-exprs.ll
new file mode 100644
index 00000000000..ffdc0f080fa
--- /dev/null
+++ b/llvm/test/Feature/vector-cast-constant-exprs.ll
@@ -0,0 +1,37 @@
+; RUN: llvm-as < %s | llvm-dis | not grep {ret.*(}
+
+; All of these constant expressions should fold.
+
+define <2 x float> @ga() {
+  ret <2 x float> fptrunc (<2 x double><double 4.3, double 3.2> to <2 x float>)
+}
+define <2 x double> @gb() {
+  ret <2 x double> fpext (<2 x float><float 2.0, float 8.0> to <2 x double>)
+}
+define <2 x i64> @gd() {
+  ret <2 x i64> zext (<2 x i32><i32 3, i32 4> to <2 x i64>)
+}
+define <2 x i64> @ge() {
+  ret <2 x i64> sext (<2 x i32><i32 3, i32 4> to <2 x i64>)
+}
+define <2 x i32> @gf() {
+  ret <2 x i32> trunc (<2 x i64><i64 3, i64 4> to <2 x i32>)
+}
+define <2 x i32> @gh() {
+  ret <2 x i32> fptoui (<2 x float><float 8.0, float 7.0> to <2 x i32>)
+}
+define <2 x i32> @gi() {
+  ret <2 x i32> fptosi (<2 x float><float 8.0, float 7.0> to <2 x i32>)
+}
+define <2 x float> @gj() {
+  ret <2 x float> uitofp (<2 x i32><i32 8, i32 7> to <2 x float>)
+}
+define <2 x float> @gk() {
+  ret <2 x float> sitofp (<2 x i32><i32 8, i32 7> to <2 x float>)
+}
+define <2 x double> @gl() {
+  ret <2 x double> bitcast (<2 x double><double 4.0, double 3.0> to <2 x double>)
+}
+define <2 x double> @gm() {
+  ret <2 x double> bitcast (<2 x i64><i64 4, i64 3> to <2 x double>)
+}
diff --git a/llvm/test/Transforms/InstCombine/vector-casts.ll b/llvm/test/Transforms/InstCombine/vector-casts.ll
new file mode 100644
index 00000000000..ae5b8a9c7c4
--- /dev/null
+++ b/llvm/test/Transforms/InstCombine/vector-casts.ll
@@ -0,0 +1,55 @@
+; RUN: llvm-as < %s | opt -instcombine
+
+define void @convert(<2 x i32>* %dst.addr, <2 x i64> %src) nounwind {
+entry:
+	%val = trunc <2 x i64> %src to <2 x i32>		; <<2 x i32>> [#uses=1]
+	%add = add <2 x i32> %val, <i32 1, i32 1>		; <<2 x i32>> [#uses=1]
+	store <2 x i32> %add, <2 x i32>* %dst.addr
+	ret void
+}
+
+define <2 x i65> @foo(<2 x i64> %t) {
+  %a = trunc <2 x i64> %t to <2 x i32>
+  %b = zext <2 x i32> %a to <2 x i65>
+  ret <2 x i65> %b
+}
+define <2 x i64> @bar(<2 x i65> %t) {
+  %a = trunc <2 x i65> %t to <2 x i32>
+  %b = zext <2 x i32> %a to <2 x i64>
+  ret <2 x i64> %b
+}
+define <2 x i65> @foos(<2 x i64> %t) {
+  %a = trunc <2 x i64> %t to <2 x i32>
+  %b = sext <2 x i32> %a to <2 x i65>
+  ret <2 x i65> %b
+}
+define <2 x i64> @bars(<2 x i65> %t) {
+  %a = trunc <2 x i65> %t to <2 x i32>
+  %b = sext <2 x i32> %a to <2 x i64>
+  ret <2 x i64> %b
+}
+define <2 x i64> @quxs(<2 x i64> %t) {
+  %a = trunc <2 x i64> %t to <2 x i32>
+  %b = sext <2 x i32> %a to <2 x i64>
+  ret <2 x i64> %b
+}
+define <2 x i64> @quxt(<2 x i64> %t) {
+  %a = shl <2 x i64> %t, <i64 32, i64 32>
+  %b = ashr <2 x i64> %a, <i64 32, i64 32>
+  ret <2 x i64> %b
+}
+define <2 x double> @fa(<2 x double> %t) {
+  %a = fptrunc <2 x double> %t to <2 x float>
+  %b = fpext <2 x float> %a to <2 x double>
+  ret <2 x double> %b
+}
+define <2 x double> @fb(<2 x double> %t) {
+  %a = fptoui <2 x double> %t to <2 x i64>
+  %b = uitofp <2 x i64> %a to <2 x double>
+  ret <2 x double> %b
+}
+define <2 x double> @fc(<2 x double> %t) {
+  %a = fptosi <2 x double> %t to <2 x i64>
+  %b = sitofp <2 x i64> %a to <2 x double>
+  ret <2 x double> %b
+}