WebAssembly: implement comparison.

Some of the FP comparisons (ueq, one, ult, ule, ugt, uge) are currently broken, I'll fix them in a follow-up.

Reviewers: sunfish

Subscribers: llvm-commits, jfb

Differential Revision: http://reviews.llvm.org/D11924

llvm-svn: 244665

1 files changed, 65 insertions, 0 deletions

diff --git a/llvm/test/CodeGen/WebAssembly/comparisons_f32.ll b/llvm/test/CodeGen/WebAssembly/comparisons_f32.ll
new file mode 100644
index 00000000000..1cb76a4f90f
--- /dev/null
+++ b/llvm/test/CodeGen/WebAssembly/comparisons_f32.ll
@@ -0,0 +1,65 @@
+; RUN: llc < %s -asm-verbose=false | FileCheck %s
+
+; Test that basic 32-bit floating-point comparison operations assemble as
+; expected.
+
+target datalayout = "e-p:32:32-i64:64-v128:8:128-n32:64-S128"
+target triple = "wasm32-unknown-unknown"
+
+; FIXME: add ord and uno tests.
+
+; CHECK-LABEL: oeq_f32:
+; CHECK-NEXT: (setlocal @0 (argument 1))
+; CHECK-NEXT: (setlocal @1 (argument 0))
+; CHECK-NEXT: (setlocal @2 (eq @1 @0))
+; CHECK-NEXT: (setlocal @3 (immediate 1))
+; CHECK-NEXT: (setlocal @4 (and @2 @3))
+; CHECK-NEXT: (return @4)
+define i32 @oeq_f32(float %x, float %y) {
+  %a = fcmp oeq float %x, %y
+  %b = zext i1 %a to i32
+  ret i32 %b
+}
+
+; CHECK-LABEL: une_f32:
+; CHECK: (setlocal @2 (ne @1 @0))
+define i32 @une_f32(float %x, float %y) {
+  %a = fcmp une float %x, %y
+  %b = zext i1 %a to i32
+  ret i32 %b
+}
+
+; CHECK-LABEL: olt_f32:
+; CHECK: (setlocal @2 (lt @1 @0))
+define i32 @olt_f32(float %x, float %y) {
+  %a = fcmp olt float %x, %y
+  %b = zext i1 %a to i32
+  ret i32 %b
+}
+
+; CHECK-LABEL: ole_f32:
+; CHECK: (setlocal @2 (le @1 @0))
+define i32 @ole_f32(float %x, float %y) {
+  %a = fcmp ole float %x, %y
+  %b = zext i1 %a to i32
+  ret i32 %b
+}
+
+; CHECK-LABEL: ogt_f32:
+; CHECK: (setlocal @2 (gt @1 @0))
+define i32 @ogt_f32(float %x, float %y) {
+  %a = fcmp ogt float %x, %y
+  %b = zext i1 %a to i32
+  ret i32 %b
+}
+
+; CHECK-LABEL: oge_f32:
+; CHECK: (setlocal @2 (ge @1 @0))
+define i32 @oge_f32(float %x, float %y) {
+  %a = fcmp oge float %x, %y
+  %b = zext i1 %a to i32
+  ret i32 %b
+}
+
+; FIXME test other FP comparisons: ueq, one, ult, ule, ugt, uge. They currently
+; are broken and failt to match.