Fix build for older llvms (#1795)

wsmoses · web-flow · commit 880fb3272e4e · 2024-03-16T19:34:59.000-07:00
diff --git a/enzyme/Enzyme/GradientUtils.cpp b/enzyme/Enzyme/GradientUtils.cpp
@@ -8968,6 +8968,7 @@ void GradientUtils::eraseWithPlaceholder(Instruction *I, Instruction *orig,
                                          const Twine &suffix, bool erase) {
   if (!I->getType()->isVoidTy() && !I->getType()->isTokenTy()) {
     auto inspos = I->getIterator();
+#if LLVM_VERSION_MAJOR >= 18
     if (I->getParent()->IsNewDbgInfoFormat) {
       if (!inspos.getHeadBit()) {
         auto srcmarker = I->getParent()->getMarker(inspos);
@@ -8976,6 +8977,7 @@ void GradientUtils::eraseWithPlaceholder(Instruction *I, Instruction *orig,
         }
       }
     }
+#endif
     IRBuilder<> BuilderZ(I->getParent(), inspos);
     auto pn = BuilderZ.CreatePHI(I->getType(), 1, I->getName() + suffix);
     fictiousPHIs[pn] = orig;

Original file line number	Diff line number	Diff line change
`@@ -8968,6 +8968,7 @@ void GradientUtils::eraseWithPlaceholder(Instruction I, Instruction orig,`
`8968`	`8968`	`const Twine &suffix, bool erase) {`
`8969`	`8969`	`if (!I->getType()->isVoidTy() && !I->getType()->isTokenTy()) {`
`8970`	`8970`	`auto inspos = I->getIterator();`
	`8971`	`+#if LLVM_VERSION_MAJOR >= 18`
`8971`	`8972`	`if (I->getParent()->IsNewDbgInfoFormat) {`
`8972`	`8973`	`if (!inspos.getHeadBit()) {`
`8973`	`8974`	`auto srcmarker = I->getParent()->getMarker(inspos);`
`@@ -8976,6 +8977,7 @@ void GradientUtils::eraseWithPlaceholder(Instruction I, Instruction orig,`
`8976`	`8977`	`}`
`8977`	`8978`	`}`
`8978`	`8979`	`}`
	`8980`	`+#endif`
`8979`	`8981`	`IRBuilder<> BuilderZ(I->getParent(), inspos);`
`8980`	`8982`	`auto pn = BuilderZ.CreatePHI(I->getType(), 1, I->getName() + suffix);`
`8981`	`8983`	`fictiousPHIs[pn] = orig;`