Subzero, MIPS32: Intrinsic call Trap

Implements intrinsic call llvm.trap. R=stichnot@chromium.org Review URL: https://codereview.chromium.org/2351893004 . Patch from Srdjan Obucina <Srdjan.Obucina@imgtec.com>.

Subzero, MIPS32: Intrinsic call Trap
0465d026 · Srdjan Obucina · Jim Stichnoth · 8d16c1d3 · 0465d026 · 0465d026
Commit 0465d026 authored Sep 20, 2016 by Srdjan Obucina Committed by Jim Stichnoth Sep 20, 2016
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IceTargetLoweringMIPS32.cpp src/IceTargetLoweringMIPS32.cpp +4 -2

nacl-other-intrinsics.ll tests_lit/llvm2ice_tests/nacl-other-intrinsics.ll +2 -0

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--- a/src/IceTargetLoweringMIPS32.cpp
+++ b/src/IceTargetLoweringMIPS32.cpp
@@ -2890,9 +2890,11 @@ void TargetMIPS32::lowerIntrinsicCall(const InstIntrinsicCall *Instr) {
    UnimplementedLoweringError(this, Instr);
    return;
  }
-  case Intrinsics::Trap:
-    UnimplementedLoweringError(this, Instr);
+  case Intrinsics::Trap: {
+    const uint32_t TrapCodeZero = 0;
+    _teq(getZero(), getZero(), TrapCodeZero);
    return;
+  }
  case Intrinsics::UnknownIntrinsic:
    Func->setError("Should not be lowering UnknownIntrinsic");
    return;

--- a/tests_lit/llvm2ice_tests/nacl-other-intrinsics.ll
+++ b/tests_lit/llvm2ice_tests/nacl-other-intrinsics.ll
@@ -336,6 +336,8 @@ NonZero:
 ; CHECK: ud2
 ; ARM32-LABEL: test_trap
 ; ARM32: .word 0xe7fedef0
+; MIPS32-LABEL: test_trap
+; MIPS32: teq zero,zero

 define internal i32 @test_bswap_16(i32 %x) {
 entry: