// When the adde's carry is not used.
if ((N0.getOpcode() == ISD::ADDE || N0.getOpcode() == ISD::ADDCARRY) &&
N0.hasOneUse() && !N0.getNode()->hasAnyUseOfValue(1) &&
- (!LegalOperations || TLI.isOperationLegal(N0.getOpcode(), VT))) {
+ // We only do for addcarry before legalize operation
+ ((!LegalOperations && N0.getOpcode() == ISD::ADDCARRY) ||
+ TLI.isOperationLegal(N0.getOpcode(), VT))) {
SDLoc SL(N);
auto X = DAG.getNode(ISD::TRUNCATE, SL, VT, N0.getOperand(0));
auto Y = DAG.getNode(ISD::TRUNCATE, SL, VT, N0.getOperand(1));
; CHECK: # %bb.0:
; CHECK-DAG: addis [[REG1:[0-9]+]], [[REG2:[0-9]+]], [[VAR1:[a-z0-9A-Z_.]+]]@toc@ha
; CHECK-DAG: ld [[REG3:[0-9]+]], [[VAR1]]@toc@l([[REG1]])
-; CHECK-DAG: lbz [[REG4:[0-9]+]], 0([[REG3]])
+; CHECK-DAG: lwz [[REG4:[0-9]+]], 0([[REG3]])
; CHECK-DAG: addic [[REG5:[0-9]+]], [[REG3]], -1
-; CHECK-DAG: extsb [[REG6:[0-9]+]], [[REG4]]
-; CHECK-DAG: addze [[REG7:[0-9]+]], [[REG6]]
+; CHECK-DAG: addze [[REG7:[0-9]+]], [[REG4]]
; CHECK-DAG: addis [[REG8:[0-9]+]], [[REG2]], [[VAR2:[a-z0-9A-Z_.]+]]@toc@ha
; CHECK-DAG: andi. [[REG9:[0-9]+]], [[REG7]], 5
; CHECK-DAG: stb [[REG9]], [[VAR2]]@toc@l([[REG8]])
--- /dev/null
+; RUN: llc -verify-machineinstrs -mtriple=powerpc-unknown-linux-gnu < %s | FileCheck %s
+
+; Test case adapted from PR40922.
+
+@a.b = internal global i32 0, align 4
+
+define i32 @a() {
+entry:
+ %call = tail call i32 bitcast (i32 (...)* @d to i32 ()*)()
+ %0 = load i32, i32* @a.b, align 4
+ %conv = zext i32 %0 to i64
+ %add = add nuw nsw i64 %conv, 6
+ %and = and i64 %add, 8589934575
+ %cmp = icmp ult i64 %and, %conv
+ br i1 %cmp, label %if.then, label %if.end
+
+if.then: ; preds = %entry
+ %call3 = tail call i32 bitcast (i32 (...)* @e to i32 ()*)()
+ br label %if.end
+
+if.end: ; preds = %if.then, %entry
+ store i32 %call, i32* @a.b, align 4
+ ret i32 undef
+}
+
+; CHECK-LABEL: @a
+; CHECK: li 5, 0
+; CHECK: mr 30, 3
+; CHECK: addic 6, 4, 6
+; CHECK: addze 5, 5
+; CHECK: rlwinm 6, 6, 0, 28, 26
+; CHECK: andi. 5, 5, 1
+
+declare i32 @d(...)
+
+declare i32 @e(...)